题目内容
计算
(1)
-3
+8 (2)(
-3)2+(
+3)-(
-3).
(1)
| 32 |
|
| 5 |
| 11 |
| 11 |
(1)
-3
+8,
=4
-
+8,
=
+8;
(2)(
-3)2+(
+3)-(
-3),
=8-6
+
+3-
+3,
=14-6
.
| 32 |
|
=4
| 2 |
| 3 |
| 2 |
| 2 |
=
| 5 |
| 2 |
| 2 |
(2)(
| 5 |
| 11 |
| 11 |
=8-6
| 5 |
| 11 |
| 11 |
=14-6
| 5 |
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