题目内容
计算:(1)(2
+
)(3
-1) (2)(
-
+3
)×
.
| 3 |
| 6 |
| 2 |
| 4 |
| 3 |
| 54 |
| 45 |
|
| 8 |
(1)(2
+
)(3
-1)
=6
-2
+6
-
=5
+4
;
(2)(
-
+3
)×
=(4
-3
+2
)×2
=(6
-3
)×2
=24
-6
.
| 3 |
| 6 |
| 2 |
=6
| 6 |
| 3 |
| 3 |
| 6 |
=5
| 6 |
| 3 |
(2)(
| 4 |
| 3 |
| 54 |
| 45 |
|
| 8 |
=(4
| 6 |
| 5 |
| 6 |
| 2 |
=(6
| 6 |
| 5 |
| 2 |
=24
| 3 |
| 10 |
练习册系列答案
相关题目