Mathematics
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数学 赤の式がどうやったら青の式になるのか教えてください

= (a−b){-c+(a−b)}. = (a - b)(a-b-c) + TM Reis

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✨ Best Answer ✨

-c+(a-b) = -c+a-b = a-b-c

括弧外して並べ替えるだけです。

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