化简并计算-2(ab^2-3a^2b)+3(-2a^2b-3ab^2) a:4/11 b:-1/4
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化简并计算-2(ab^2-3a^2b)+3(-2a^2b-3ab^2) a:4/11 b:-1/4
化简并计算-2(ab^2-3a^2b)+3(-2a^2b-3ab^2) a:4/11 b:-1/4
化简并计算-2(ab^2-3a^2b)+3(-2a^2b-3ab^2) a:4/11 b:-1/4
-2(ab^2-3a^2b)+3(-2a^2b-3ab^2)
=-2ab^2+6a^2b-6a^2b-9ab^2
=-11ab^2
=-11*4/11*1/16
=-1/4
a=4/11 b=-1/4