问题标题:
数学问题-2m-3n)(3n-2m)等于多少?
问题描述:
数学问题-2m-3n)(3n-2m)等于多少?
冯桂宏回答:
(-2m-3n)(3n-2m)
=-(3n+2m)(3n-2m)
=-9n^2+4m^2
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数学问题-2m-3n)(3n-2m)等于多少?