题目内容
计算:(1)
=______;
(2)
=______.
|
(2)
3
| ||
|
(1)
=
=
;
(2)
=
=
=
.
故答案为:
;
.
|
| ||
|
| 6 |
| 7x |
| y |
(2)
3
| ||
|
3
| ||
3
|
| ||
|
| ||
| 3 |
故答案为:
| 6 |
| 7x |
| y |
| ||
| 3 |
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