题目内容
计算:
(1)
-
(2)
×
×
(3)(
+2
)(
-2
)
(1)
| 12 |
| 27 |
(2)
| 6 |
| 15 |
| 10 |
(3)(
| 2 |
| 3 |
| 2 |
| 3 |
(1)原式=2
-3
=-
;
(2)原式=
×
=
=30;
(3)原式=2-12=-10.
| 3 |
| 3 |
| 3 |
(2)原式=
| 90 |
| 10 |
| 900 |
(3)原式=2-12=-10.
练习册系列答案
相关题目
题目内容
| 12 |
| 27 |
| 6 |
| 15 |
| 10 |
| 2 |
| 3 |
| 2 |
| 3 |
| 3 |
| 3 |
| 3 |
| 90 |
| 10 |
| 900 |