Mathematics
Junior High

M=x−2なのに
線を引いてある部分はなぜx+2なのですか?

ロ(2)(エ-2) 2-ー4 (r-2) -12 ェー2をMとすると, M'-4M-12 |公式のを使う (9-7)(2+月)= Mをェー2にもどす = (r-2+2)(r+2-6) =x(r-4) (ェ-4)

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