题目内容
计算:
(1)
+3
-5
(2)
(
-
)
(3)|
-
|+|
-2|+
.
(1)
| 2 |
| 2 |
| 2 |
(2)
| 6 |
| 1 | ||
|
| 6 |
(3)|
| 3 |
| 2 |
| 3 |
| (-2)2 |
(1)原式=(1+3-5)
=-
;
(2)原式=
•
-
×
=1-6
=-5;
(3)原式=
-
+2-
+2
=4-
| 2 |
=-
| 2 |
(2)原式=
| 6 |
| 1 | ||
|
| 6 |
| 6 |
=1-6
=-5;
(3)原式=
| 3 |
| 2 |
| 3 |
=4-
| 2 |
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