计算:(1)(-3a2)3•(-2a2)(2)(2x-1)(3x+2)(3)2x2(x-1)-x(2x2-3x+1)(4)[(2x-y)(2x+y)+y(y-6x)]÷2x.-数学

题目简介

计算:(1)(-3a2)3•(-2a2)(2)(2x-1)(3x+2)(3)2x2(x-1)-x(2x2-3x+1)(4)[(2x-y)(2x+y)+y(y-6x)]÷2x.-数学

题目详情

计算:
(1)(-3a23•(-2a2)                      
(2)(2x-1)(3x+2)
(3)2x2(x-1)-x(2x2-3x+1)
(4)[(2x-y)(2x+y)+y(y-6x)]÷2x.
题型:解答题难度:中档来源:不详

答案

(1)原式=-27a6•(-2a2)=54a8;
(2)原式=6x2+4x-3x-2=6x2+x-2;
(3)原式=2x3-2x2-2x3+3x2-x=x2-x;
(4)原式=(4x2-y2+y2-6xy)÷2x=(4x2-6xy)÷2x=2x-3y.

更多内容推荐