题目内容
计算:
(1)
;
(2)3
-
+7
;
(3)(π+1)0-
+|-
|-(
+
)(
-
).
(1)
| ||||
|
(2)3
| 18 |
| 1 |
| 2 |
| 32 |
|
(3)(π+1)0-
| 12 |
| 3 |
| 2 |
| 3 |
| 3 |
| 2 |
(1)原式=
÷
-
÷
=4-2
=2;
(2)原式=3×3
-
×4
+7×
=9
-2
+
=
;
(3)原式=1-2
+
-(3-2)
=-
.
| 32 |
| 2 |
| 8 |
| 2 |
=4-2
=2;
(2)原式=3×3
| 2 |
| 1 |
| 2 |
| 2 |
| ||
| 4 |
=9
| 2 |
| 2 |
7
| ||
| 4 |
=
35
| ||
| 4 |
(3)原式=1-2
| 3 |
| 3 |
=-
| 3 |
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