Mathematics
Junior High
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⬇︎この式の因数分解のやり方を教えてください🙇‍♀️

x(y-5)-3y+15

Answers

✨ Best Answer ✨

x(y-5)-3(y-5)
y-5=Aとおくと
xA-3A
A(x-3)
A=y-5に戻す
(y-5)(x-3)

sora

ありがとうございます!

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