题目内容
思考:观察式子:
=
=
=
=
+3.
请化简:(1)
(2)
(3)
| 1 | ||
|
| ||||
(
|
| ||
(
|
| ||
| 1 |
| 10 |
请化简:(1)
| 1 | ||
7-4
|
| 1 | ||||
|
| ||
|
(1)原式=
=7+4
;
(2)原式=
=
;
(3)原式=
=2+
.
7+4
| ||||
(7-4
|
| 3 |
(2)原式=
| ||||||||
(
|
| ||||
| 3 |
(3)原式=
| ||||
(
|
| 2 |
练习册系列答案
相关题目