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(2m-3n)的平方-2m+3n,因式分解
人气:384 ℃ 时间:2019-12-26 06:26:18
解答
(2m-3n)^2-2m+3n
=(2m-3n)^2-(2m-3n)
=(2m-3n)(2m-3n-1)
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