题目内容
计算
(1)2
-
+
(2)(
-
) ×(
+2
)
(3)
-
.
(1)2
| 12 |
| 27 |
|
(2)(
| 6 |
|
| 24 |
|
(3)
(1-
|
(1+
|
(1)原式=4
-3
+
=
;
(2)原式=(
-
)×
=16-
.
(3)原式=
-1-(1+
)
=-2.
| 3 |
| 3 |
| ||
| 3 |
=
4
| ||
| 3 |
(2)原式=(
| 6 |
| ||
| 2 |
8
| ||
| 3 |
=16-
8
| ||
| 3 |
(3)原式=
| 3 |
| 3 |
=-2.
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