题目内容
计算:
(1)2
+
-
(2)-2
(
-
)
(3)(
-1)2+
(
-
)
(4)(π-3.14)0+
+(-
)-1-|1-
|
(1)2
2 |
8 |
50 |
(2)-2
3 |
12 |
1 |
4 |
2 |
(3)(
3 |
2 |
|
6 |
(4)(π-3.14)0+
18 |
1 |
2 |
2 |
(1)原式=2
+2
-5
=-
;
(2)原式=-2
×(2
-
)=-2
×2
+2
×
=-12+
;
(3)原式=3-2
+1+
-
=4-2
+1-2
=5-4
;
(4)原式=1+3
-2+1-
=2
.
2 |
2 |
2 |
2 |
(2)原式=-2
3 |
3 |
| ||
4 |
3 |
3 |
3 |
| ||
4 |
| ||
2 |
(3)原式=3-2
3 |
2×
|
2×6 |
3 |
3 |
3 |
(4)原式=1+3
2 |
2 |
2 |
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