Mathematics
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これであってますか?

② /Z2ー6g+9-のが (meeTD-p て | (4ンクに 2zy二2216
因数分解

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✨ Best Answer ✨

そこからa²−b²=(a+b)(a−b)が使えますよー

ゲスト

どこの部分で使えますか?

しおから

(a−3)²−b
={(a−3)+b}{(a−3)−b}
=(a+b−3)(a−b−3)

(x+y)²−16
=(x+y+4)(x+y−4)

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