问题
解答题
计算下列各题: (1)(-2a2b3)3 (2)(a2•bm)3•b2 (3)(
(4)(x2y3)4+(-2x4y)2y10 |
答案
(1)(-2a2b3)3,
=(-2)3(a2)3(b3)3,
=-8a6b9;
(2)(a2•bm)3•b2,
=a6b3m•b2,
=a6b3m+2;
(3)(
)8×48,1 4
=(
×4)8,1 4
=1;
(4)(x2y3)4+(-2x4y)2y10,
=x8y12+4x8y2y10,
=x8y12+4x8y12,
=5x8y12.