题目内容
计算:a2÷b•
÷c•
÷d•
=( )
| 1 |
| b |
| 1 |
| c |
| 1 |
| d |
| A.a2 | B.
| C.
| D.都不对 |
a2÷b•
÷c•
÷d•
=a2•
•
•
•
•
•
=
故选C.
| 1 |
| b |
| 1 |
| c |
| 1 |
| d |
=a2•
| 1 |
| b |
| 1 |
| b |
| 1 |
| c |
| 1 |
| c |
| 1 |
| d |
| 1 |
| d |
=
| a2 |
| b2c2d2 |
故选C.
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