因式分解(3m+2n)²-4(m-n)²
人气：436 ℃ 时间：2020-02-20 14:55:23
解答
(3m+2n)²-4(m-n)²
=(3m+2n)²-2²(m-n)²
=(3m+2n)²-(2m-2n)²
=(3m+2n+2m-2n)(3m+2n-2m+2n)
=5m(m+4n)
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