摘要:计算下列各题:(1)x3y4÷x3y2 (2)9a3b4c2÷2ab2÷3abc (3)(6×105)2÷(3×102)
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计算下列各题:
(1)(2
+3
)×(2
-3
)
(2)(
-
)2×(5+2
)
(3)
÷
(4)3
÷(
)
(5)
×
÷(-
)
(6)(3-2
)2×(3+2
)2.
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(1)(2
| 3 |
| 2 |
| 3 |
| 2 |
(2)(
| 3 |
| 2 |
| 6 |
(3)
|
2
|
(4)3
| 20 |
| 3 |
| 4 |
2
|
(5)
| 15 |
| 3 |
| 5 |
| 20 |
| 1 |
| 3 |
| 6 |
(6)(3-2
| 2 |
| 2 |