Mathematics
Junior High

最後の答えの4(x+2y)になるのはなぜですか?
2(x+2y)ではなぜちがうのですか?

(6) >2十6r(r+27)+9(ァ+27). ={ァ十3(ァ27)} = (ズィ3え6すフ EC(人ZZ+693ア 還作62メ+ィラッパ

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