题目内容
计算:
(1)
÷
(2)
÷
(3)
÷
×
(4)2
÷
×
.
(1)
|
|
(2)
| xy |
|
(3)
1
|
2
|
1
|
(4)2
| 12 |
| 1 |
| 2 |
| 50 |
| 1 |
| 2 |
|
(1)原式=
=
=
;
(2)原式=
=
=|x|;
(3)原式=
=
=
;
(4)原式=4
÷
×
=
×
=
.
|
|
| 1 |
| 8 |
(2)原式=
xy÷
|
| x2 |
(3)原式=
|
|
2
| ||
| 5 |
(4)原式=4
| 3 |
| 5 |
| 2 |
| 2 |
| 1 |
| 4 |
| 3 |
| 2 |
| 5 |
3
| ||
| 2 |
3
| ||
| 5 |
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