题目内容
化简(a| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 6 |
| 5 |
| 6 |
分析:利用同底数幂的运算法则:同底数幂相乘,底数不变,指数相加;同底数幂相除,底数不变,指数相减.
解答:解:(a
b
)(-3a
b
)÷(
a
b
),
=-9a
+
-
b
+
-
,
=-9a,
故答案为-9a.
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 6 |
| 5 |
| 6 |
=-9a
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 6 |
| 1 |
| 2 |
| 1 |
| 3 |
| 5 |
| 6 |
=-9a,
故答案为-9a.
点评:本题考查利用同底数幂的运算法则化简代数式.
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相关题目
化简(a
b
)(-3a
b
)÷(
a
b
)的结果( )
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 6 |
| 5 |
| 6 |
| A、6a |
| B、-a |
| C、-9a |
| D、9a2 |