问题
解答题
计算:
(1)(a3)2÷(a2)3
(2)(x-y)(x2-xy+y2)
答案
(1)原式=a6÷a6=1;
(2)原式=x3-x2y+xy2-x2y+xy2-y3=x3-2x2y+2xy2-y3.
计算:
(1)(a3)2÷(a2)3
(2)(x-y)(x2-xy+y2)
(1)原式=a6÷a6=1;
(2)原式=x3-x2y+xy2-x2y+xy2-y3=x3-2x2y+2xy2-y3.