题目内容
计算:(1)(-2)2×
-4
(4-
)-
(2)5
+
-
+
| 12 |
| 3 |
| 3 |
| 8 | ||
2-
|
|
| 1 |
| 2 |
| 20 |
| 5 |
| 4 |
|
| 45 |
(1)原式=4×2
-16
+12-16-8
=-4-16
;
(2)原式=
+
-
+3
=
.
| 3 |
| 3 |
| 3 |
=-4-16
| 3 |
(2)原式=
| 5 |
| 5 |
| 1 |
| 2 |
| 5 |
| 5 |
=
| 9 |
| 2 |
| 5 |
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