问题
计算题
计算:
(1)(a2)3+(a3)2﹣a·a5;
(2)(﹣2a2)2·a4+(﹣5a4)2;
(3)(﹣3x)5÷(﹣3x)2+x4÷x;
(4)2﹣2×(43×80).
答案
解:(1)原式=a6+a6﹣a6
=a6;
(2)原式=4a4·a4+25a8
=4a8+25a8
=29a8;
(3)原式=(﹣3x)3+x3
=﹣27x3+x3
=﹣26x3;
(4)原式=×(64×1)
=×64
=8.