问题
解答题
计算: (1)(-3mn2•m2)3; (2)(-a3)2•a3+(-a2)•a7-(2a3)3; (3)(3
|
答案
(1)原式=(-3)3m9n6
=-27m9n6;
(2)原式=a9-a9-8a9
=-8a9;
(3)原式=(
)9×(-10 3
)9×3 10
×10 3 3 5
=-2.
计算: (1)(-3mn2•m2)3; (2)(-a3)2•a3+(-a2)•a7-(2a3)3; (3)(3
|
(1)原式=(-3)3m9n6
=-27m9n6;
(2)原式=a9-a9-8a9
=-8a9;
(3)原式=(
)9×(-10 3
)9×3 10
×10 3 3 5
=-2.