题目内容
化简:
(1)
;
(2)(
+
)(-
+
);
(3)
-5
+
;
(4)|
-2|+(π-2009)0+
-(-
)-2.
(1)
| 54 |
(2)(
| 3 |
| 2 |
| 2 |
| 3 |
(3)
| 40 |
|
| 10 |
(4)|
| 3 |
| ||||
|
| 1 |
| 2 |
(1)原式=
=3
;
(2)原式=(
+
)(
-
)=3-2=1;
(3)原式=2
-5×
+
=
;
(4)原式=2-
+1+3-4=2-
.
| 9×6 |
| 6 |
(2)原式=(
| 3 |
| 2 |
| 3 |
| 2 |
(3)原式=2
| 10 |
| 1 |
| 10 |
| 10 |
| 10 |
| 5 |
| 2 |
| 10 |
(4)原式=2-
| 3 |
| 3 |
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