计算:(4x3y3)4-3(x4y4)3=______;(4x+2y)(x+y)=______.-数学

题目简介

计算:(4x3y3)4-3(x4y4)3=______;(4x+2y)(x+y)=______.-数学

题目详情

计算:(4x3y34-3(x4y43=______;(4x+2y)(x+y)=______.
题型:填空题难度:中档来源:不详

答案

(4x3y3)4-3(x4y4)3 
=44(xy)12-3(xy)12
=(256-3)x12y12
=253x12y12;

(4x+2y)(x+y) 
=4x2+4xy+2xy+2y2
=4x2+6xy+2y2.

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