Mathematics
Senior High

これってどやって工夫しますか?🙇‍♀️

(5)* (a+b-cld(a-b-c+d)

Answers

a-cとb-dをひとかたまりとみる

b-dとb+d になりません?

ひま

ならない
左が+(b-d)で右手が-(b-d)

ほんとですね、ありがとうございます!

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