Mathematics
Junior High
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なぜこのふたつは=なのですか?
=a²
=
(b-c)+a(b+c)(b-c)+bc (b-c)
= {a²+(b+c)a+bc} (b-c)
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なぜこのふたつは=なのですか?
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ありがとうございます!同じもの(今回の場合b-c)はひとつにまとめることが出来るということですか?(累乗など使わずに)