题目内容
计算:
(1)
.
(2)
.
(3)
.
(4)
.
(5)-
÷
.
(6)
÷
.
(1)
| ||
|
(2)
| 1.6 |
(3)
| ||
|
(4)
| ||
|
(5)-
4
|
2
|
(6)
| 1 |
| a |
|
| 1 |
| b |
|
(1)原式=
=4;
(2)原式=
=
=
;
(3)原式=
=
;
(4)原式=
=
=
=
;
(5)原式=-
=-
;
(6)原式=
=
|a|.
4
| ||
|
(2)原式=
|
|
| 2 |
| 5 |
| 10 |
(3)原式=
| ||||
|
| ||
| 6a |
(4)原式=
|
|
| ||
2
|
| ||
| 4 |
(5)原式=-
|
3
| ||
| 4 |
(6)原式=
| b |
| a |
| a2 |
| b |
| a |
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