题目内容
计算题:
(1)(3
-2
+
-
)÷2
-(-
)2
(2)
+
-
(1)(3
| 12 |
|
| 6 |
| 8 |
| 3 |
| 3 |
(2)
| ||
|
| ||
|
(1-
|
(1)原式=(6
-
+
-2
)÷2
-3
=3-
+
-
-3
=-
+
-
;
(2)原式=
+(
+2)(
-1)+1-
=3+2-
+2
-2+1-
=4.
| 3 |
| 2 |
| 3 |
| 3 |
| 6 |
| 2 |
| 3 |
=3-
| 1 |
| 3 |
| ||
| 2 |
| ||
| 3 |
=-
| 1 |
| 3 |
| ||
| 2 |
| ||
| 3 |
(2)原式=
| 9 |
| 2 |
| 2 |
| 2 |
=3+2-
| 2 |
| 2 |
| 2 |
=4.
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