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		<title>苦手な数学を簡単に☆</title>
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		<description><![CDATA[苦手な数学を簡単に☆]]></description>
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			<title>かっこの前がプラス、マイナスの場合</title>
			<pubDate><![CDATA[Wed, 03 Jun 2020 09:29:56 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/pythagorean-theorem-exercises-2/]]></guid>
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			<title>三平方の定理　練習問題②</title>
			<pubDate><![CDATA[Thu, 30 Jun 2022 06:56:35 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/the-primary-function-graph-problem/]]></guid>
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			<title>一次関数　~グラフを使った問題~</title>
			<pubDate><![CDATA[Wed, 01 Jun 2022 14:04:54 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/test-analysis/]]></guid>
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			<title>テストを終えてやるべきこと！</title>
			<pubDate><![CDATA[Sun, 31 May 2020 12:34:06 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/equation-saline-basic/]]></guid>
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			<title>食塩水の問題（基本事項☆）</title>
			<pubDate><![CDATA[Sun, 18 Jul 2021 18:24:10 +0000]]></pubDate>
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			<title>二次方程式　~解の公式を使いこなす~</title>
			<pubDate><![CDATA[Sun, 06 Sep 2020 07:35:27 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/quadratic-equation-foundation/]]></guid>
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			<title>二次方程式　~基礎から始める二次方程式~</title>
			<pubDate><![CDATA[Wed, 29 Jul 2020 14:16:55 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/space-graphic-surface-parallel/]]></guid>
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			<title>空間図形の問題　~辺・面・平行・垂直~</title>
			<pubDate><![CDATA[Wed, 09 Jun 2021 11:42:20 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/what-is-an-equation7/]]></guid>
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			<title>方程式とは？</title>
			<pubDate><![CDATA[Sun, 21 Jun 2020 06:38:11 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/be-careful-of-substitution/]]></guid>
			<link><![CDATA[https://31investment.com/be-careful-of-substitution/]]></link>
			<title>代入するときに気をつけること！</title>
			<pubDate><![CDATA[Wed, 03 Jun 2020 07:58:45 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/linear-equation-word-problems-3/]]></guid>
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			<title>一次方程式の利用③（速さ）</title>
			<pubDate><![CDATA[Tue, 21 Jul 2020 08:13:41 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/common-multiple-common-divisor/]]></guid>
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			<title>最大公約数と最小公倍数のひみつ☆</title>
			<pubDate><![CDATA[Sun, 05 Jul 2020 05:09:01 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/character-multiply-multiplication4/]]></guid>
			<link><![CDATA[https://31investment.com/character-multiply-multiplication4/]]></link>
			<title>文字を使った計算（かけ算、割り算）</title>
			<pubDate><![CDATA[Tue, 09 Jun 2020 16:46:42 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/fractional-precaution-3/]]></guid>
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			<title>みんなが間違える「分数」の注意点！</title>
			<pubDate><![CDATA[Sun, 07 Jun 2020 08:41:29 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/quadratic-equation-deformation/]]></guid>
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			<title>二次方程式　平方完成！　~(x+m)2=nへ変形~</title>
			<pubDate><![CDATA[Sun, 02 Aug 2020 14:18:05 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/linear-equation-word-problems-5/]]></guid>
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			<title>一次方程式の利用⑤（原価）</title>
			<pubDate><![CDATA[Sat, 25 Jul 2020 09:26:34 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/equate-inequality-learns/]]></guid>
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			<title>「等式」と「不等式」をまとめて学ぶ！</title>
			<pubDate><![CDATA[Sat, 13 Jun 2020 13:14:23 +0000]]></pubDate>
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			<title>交換法則とは？</title>
			<pubDate><![CDATA[Sat, 06 Jun 2020 10:03:38 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/pi/]]></guid>
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			<title>円周率πについて☆</title>
			<pubDate><![CDATA[Sat, 06 Jun 2020 09:59:02 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/quadratic-equation-factorization/]]></guid>
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			<title>二次方程式　~因数分解を利用する~</title>
			<pubDate><![CDATA[Sat, 01 Aug 2020 07:17:28 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/square-root-of-recurring-decimal/]]></guid>
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			<title>不思議な数(循環小数)　~循環小数⇄分数~</title>
			<pubDate><![CDATA[Sun, 31 May 2020 12:18:32 +0000]]></pubDate>
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			<title>一次方程式の利用②（文章問題）</title>
			<pubDate><![CDATA[Sat, 04 Jul 2020 09:09:14 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/primary-expression/]]></guid>
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			<title>一次式、二次式とは？</title>
			<pubDate><![CDATA[Sun, 31 May 2020 09:22:47 +0000]]></pubDate>
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			<guid><![CDATA[https://31investment.com/square-root-of-an-integer-fraction/]]></guid>
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			<title>平方根　~整数部分と小数部分の問題~</title>
			<pubDate><![CDATA[Sat, 30 May 2020 13:53:24 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/linear-equation-word-problems/]]></guid>
			<link><![CDATA[https://31investment.com/linear-equation-word-problems/]]></link>
			<title>一次方程式の利用①（文章問題） ~ポイントは３つだけ~</title>
			<pubDate><![CDATA[Sat, 27 Jun 2020 10:00:00 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/math-character-of-rules/]]></guid>
			<link><![CDATA[https://31investment.com/math-character-of-rules/]]></link>
			<title>数学で使う文字のルールを知ろう！</title>
			<pubDate><![CDATA[Sat, 30 May 2020 13:43:01 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/square-root-formula-value/]]></guid>
			<link><![CDATA[https://31investment.com/square-root-formula-value/]]></link>
			<title>平方根　~式の値~</title>
			<pubDate><![CDATA[Tue, 26 May 2020 12:54:29 +0000]]></pubDate>
		</item>
					<item>
			<guid><![CDATA[https://31investment.com/what-absolute-value/]]></guid>
			<link><![CDATA[https://31investment.com/what-absolute-value/]]></link>
			<title>絶対値とは「符号をとるだけ!?」</title>
			<pubDate><![CDATA[Tue, 26 May 2020 12:35:10 +0000]]></pubDate>
		</item>
					<item>
			<guid><![CDATA[https://31investment.com/square-root-large-small/]]></guid>
			<link><![CDATA[https://31investment.com/square-root-large-small/]]></link>
			<title>平方根の大小　~条件を満たす~</title>
			<pubDate><![CDATA[Tue, 19 May 2020 07:06:48 +0000]]></pubDate>
		</item>
					<item>
			<guid><![CDATA[https://31investment.com/square-root-size/]]></guid>
			<link><![CDATA[https://31investment.com/square-root-size/]]></link>
			<title>平方根の大小　~どっちが大きか基本~</title>
			<pubDate><![CDATA[Tue, 19 May 2020 07:00:01 +0000]]></pubDate>
		</item>
					<item>
			<guid><![CDATA[https://31investment.com/irrational-square-root-of-rational/]]></guid>
			<link><![CDATA[https://31investment.com/irrational-square-root-of-rational/]]></link>
			<title>平方根　超簡単にわかる！~有理数と無理数~</title>
			<pubDate><![CDATA[Thu, 28 May 2020 10:53:46 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/square-root-calculation-in2/]]></guid>
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			<title>平方根の計算　~√の中と外を自由に行き来する方法②~</title>
			<pubDate><![CDATA[Thu, 21 May 2020 15:23:58 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/square-root-denominator-rationalization/]]></guid>
			<link><![CDATA[https://31investment.com/square-root-denominator-rationalization/]]></link>
			<title>平方根　分母の根号(ルート)をなくす！~有理化~</title>
			<pubDate><![CDATA[Thu, 21 May 2020 15:15:10 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/the-calculation-of-the-index/]]></guid>
			<link><![CDATA[https://31investment.com/the-calculation-of-the-index/]]></link>
			<title>指数の計算方法！</title>
			<pubDate><![CDATA[Sun, 24 May 2020 08:47:25 +0000]]></pubDate>
		</item>
					<item>
			<guid><![CDATA[https://31investment.com/square-root-approximate-value/]]></guid>
			<link><![CDATA[https://31investment.com/square-root-approximate-value/]]></link>
			<title>平方根　~近似値を求める~</title>
			<pubDate><![CDATA[Sat, 30 May 2020 08:15:23 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/square-root-expansion/]]></guid>
			<link><![CDATA[https://31investment.com/square-root-expansion/]]></link>
			<title>平方根　~式を展開する~</title>
			<pubDate><![CDATA[Sat, 23 May 2020 13:53:02 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/square-root-calculation-practice/]]></guid>
			<link><![CDATA[https://31investment.com/square-root-calculation-practice/]]></link>
			<title>平方根　~計算練習問題~</title>
			<pubDate><![CDATA[Mon, 25 May 2020 13:40:10 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/square-root-calculation-in/]]></guid>
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			<title>平方根の計算　~√の中と外を自由に行き来する方法①~</title>
			<pubDate><![CDATA[Mon, 18 May 2020 16:38:52 +0000]]></pubDate>
		</item>
					<item>
			<guid><![CDATA[https://31investment.com/square-root/]]></guid>
			<link><![CDATA[https://31investment.com/square-root/]]></link>
			<title>簡単にわかる！平方根</title>
			<pubDate><![CDATA[Mon, 18 May 2020 04:14:55 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/factorization-square/]]></guid>
			<link><![CDATA[https://31investment.com/factorization-square/]]></link>
			<title>因数分解　~何かの2乗を探す~</title>
			<pubDate><![CDATA[Wed, 13 May 2020 15:29:54 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/common-factor/]]></guid>
			<link><![CDATA[https://31investment.com/common-factor/]]></link>
			<title>共通因数とは</title>
			<pubDate><![CDATA[Tue, 12 May 2020 02:57:03 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/factorization-for-the-first-time/]]></guid>
			<link><![CDATA[https://31investment.com/factorization-for-the-first-time/]]></link>
			<title>因数分解　~共通因数~</title>
			<pubDate><![CDATA[Tue, 12 May 2020 02:55:34 +0000]]></pubDate>
		</item>
					<item>
			<guid><![CDATA[https://31investment.com/simultaneous-equations-square-2/]]></guid>
			<link><![CDATA[https://31investment.com/simultaneous-equations-square-2/]]></link>
			<title>因数分解　~何かの2乗を探す~　の続き</title>
			<pubDate><![CDATA[Thu, 14 May 2020 12:42:36 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/official-of-deployment/]]></guid>
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			<title>展開の公式を使いこなそう！</title>
			<pubDate><![CDATA[Sun, 10 May 2020 08:00:32 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/expand-official-squared/]]></guid>
			<link><![CDATA[https://31investment.com/expand-official-squared/]]></link>
			<title>式の展開方法　~前２乗全後ろ２乗~　(x+a)2</title>
			<pubDate><![CDATA[Sat, 09 May 2020 09:05:13 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/prime-factorization/]]></guid>
			<link><![CDATA[https://31investment.com/prime-factorization/]]></link>
			<title>簡単にできる素因数分解！</title>
			<pubDate><![CDATA[Mon, 11 May 2020 05:24:27 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/difficult-factorization/]]></guid>
			<link><![CDATA[https://31investment.com/difficult-factorization/]]></link>
			<title>因数分解　~これが解けたらすごいよ！~</title>
			<pubDate><![CDATA[Fri, 15 May 2020 23:00:09 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/simply-factorization/]]></guid>
			<link><![CDATA[https://31investment.com/simply-factorization/]]></link>
			<title>因数分解ができるようになる「３つのこと」</title>
			<pubDate><![CDATA[Fri, 15 May 2020 19:56:11 +0000]]></pubDate>
		</item>
					<item>
			<guid><![CDATA[https://31investment.com/finally-catching-that-plus-factorization/]]></guid>
			<link><![CDATA[https://31investment.com/finally-catching-that-plus-factorization/]]></link>
			<title>因数分解　~最後にかけてたして~</title>
			<pubDate><![CDATA[Fri, 15 May 2020 19:53:54 +0000]]></pubDate>
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					<item>
			<guid><![CDATA[https://31investment.com/formula-deployment-square/]]></guid>
			<link><![CDATA[https://31investment.com/formula-deployment-square/]]></link>
			<title>式の展開方法　~２乗してひく~　(a+b)(a-b)</title>
			<pubDate><![CDATA[Fri, 08 May 2020 11:48:04 +0000]]></pubDate>
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