问题
解答题
计算:
(1)(-x2)5;
(2)[(x+y)a+1]3;
(3)(-x4)2-x•(-x)3•(-x)4.
答案
(1)原式=-x10;
(2)原式=(x+y)3(a+1)
=(x+y)3a+3;
(3)原式=x8-x•(-x)3•x4
=x8+x•x3•x4
=2x8.
计算:
(1)(-x2)5;
(2)[(x+y)a+1]3;
(3)(-x4)2-x•(-x)3•(-x)4.
(1)原式=-x10;
(2)原式=(x+y)3(a+1)
=(x+y)3a+3;
(3)原式=x8-x•(-x)3•x4
=x8+x•x3•x4
=2x8.