问题
解答题
计算: (1)(-5ab)3; (2)-(3x2y)2; (3)(-1
(4)(-xmy3m)2. |
答案
(1)(-5ab)3=(-5)3a3b3=-125a3b3;
(2)-(3x2y)2=-32x4y2=-9x4y2;
(3)(-1
ab2c3)3=(-1 3
ab2c3)3=(-4 3
)3 a3b6c9=-4 3
a3b6c9;64 27
(4)(-xmy3m)2=(-1)2x2my6m=x2my6m.