题目内容
计算:
(1)(-3mn2•m2)3;
(2)(-a3)2•a3+(-a2)•a7-(2a3)3;
(3)(3
)10×(-
)9×
.
(1)(-3mn2•m2)3;
(2)(-a3)2•a3+(-a2)•a7-(2a3)3;
(3)(3
| 1 |
| 3 |
| 3 |
| 10 |
| 3 |
| 5 |
(1)原式=(-3)3m9n6
=-27m9n6;
(2)原式=a9-a9-8a9
=-8a9;
(3)原式=(
)9×(-
)9×
×
=-2.
=-27m9n6;
(2)原式=a9-a9-8a9
=-8a9;
(3)原式=(
| 10 |
| 3 |
| 3 |
| 10 |
| 10 |
| 3 |
| 3 |
| 5 |
=-2.
练习册系列答案
相关题目