计算[(x-2y)2+(x-2y)(x+2y)+2x(2x-y)]÷2x.-数学

题目简介

计算[(x-2y)2+(x-2y)(x+2y)+2x(2x-y)]÷2x.-数学

题目详情

计算[(x-2y)2+(x-2y)(x+2y)+2x(2x-y)]÷2x.
题型:解答题难度:中档来源:不详

答案

[(x-2y)2+(x-2y)(x+2y)+2x(2x-y)]÷2x
=[x2-4xy+4y2+x2-4y2+4x2-2xy]÷2x
=[6x2-6xy]÷2x
=3x-3y.

更多内容推荐