(3m+2)(2m-1)-2(1-m)(m+1)
=6m+m-2+2(m-1)
=8m+m-4
运用公式简便计算:(3m+2)(2m-1)-2(1-m)(m+1)
运用公式简便计算:(3m+2)(2m-1)-2(1-m)(m+1)
数学人气:614 ℃时间:2019-12-18 10:10:55
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