题目内容
计算题:(1)3
+
-
-
(2)(
+1)(
-1)+
(3)
+
-
| 3 |
| 8 |
| 2 |
| 48 |
(2)(
| 5 |
| 5 |
2-
| ||
|
(3)
|
| 16x |
| ||
|
(1)原式=3
+2
-
-4
=
-
;
(2)原式=(
)2-12+2÷
-
÷
,
=4+
-1,
=3+
;
(3)原式=
+4
-2
,
=
.
| 3 |
| 2 |
| 2 |
| 3 |
| 2 |
| 3 |
(2)原式=(
| 5 |
| 2 |
| 2 |
| 2 |
=4+
| 2 |
=3+
| 2 |
(3)原式=
| 5 |
| 2 |
| x |
| x |
| x |
=
| 9 |
| 2 |
| x |
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