Mathematics
Junior High

因数分解です!
答えは5b(a²-4)ですか?
間違っていたら解説お願いします🙇‍♀️

(6) ab+5a-26-10
因数分解

Answers

ab+5a2b-10
=a(b+5)-2(b+5)
(b+5)をMとする
=aM-2M
=(a-2)M
=(a-2)(b+5)
になります
答えは(a-2)(b+5)

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解説するまでもない問題
(a-2)(b+5)

ちなみに5b(a^2-4)=5a^2b-20b

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