计算:(1)(a3)2÷(a2)3(2)(x-y)(x2-xy+y2)-数学

题目简介

计算:(1)(a3)2÷(a2)3(2)(x-y)(x2-xy+y2)-数学

题目详情

计算:
(1)(a32÷(a23    
(2)(x-y)(x2-xy+y2
题型:解答题难度:中档来源:不详

答案

(1)原式=a6÷a6=1;
(2)原式=x3-x2y+xy2-x2y+xy2-y3=x3-2x2y+2xy2-y3.

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