题目内容
化简:(7-5
)2000•(7+5
)2001=______.
| 2 |
| 2 |
(7-5
)2000•(7+5
)2001
=(7-5
)2000•(7+5
)2000•(7+5
)
=[(7-5
)•(7+5
)]2000•(7+5
)
=(-1)2000•(7+5
)
=7+5
,
故答案为:7+5
.
| 2 |
| 2 |
=(7-5
| 2 |
| 2 |
| 2 |
=[(7-5
| 2 |
| 2 |
| 2 |
=(-1)2000•(7+5
| 2 |
=7+5
| 2 |
故答案为:7+5
| 2 |
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