计算:(1)(3xy-2x2-3y2)+(x2-5xy+3y2);(2)x2(5x2-2x+1);(3)(ab3c)·a3bc·(-8abc)2;(4)(-0.125)15×(215)3+;(5)[x

题目简介

计算:(1)(3xy-2x2-3y2)+(x2-5xy+3y2);(2)x2(5x2-2x+1);(3)(ab3c)·a3bc·(-8abc)2;(4)(-0.125)15×(215)3+;(5)[x

题目详情

计算:
(1)(3xy-2x2-3y2)+(x2-5xy+3y2);
(2)x2(5x2-2x+1);
(3)(ab3c)·a3bc·(-8abc)2
(4)(-0.125)15×(2153+
(5)[xy(x2+y)(x2-y)+x2y7÷3xy4]÷(x4y);
(6)(a+b-c)(a-b-c)。
题型:计算题难度:中档来源:同步题

答案

解:(1)
(2)
(3)
(4)
(5)-4x;
(6)

更多内容推荐