题目内容
计算:
(1)
+
-
-6
(2)(2-
)(2+
)
(1)
2 | ||
|
27 |
18 |
|
(2)(2-
3 |
3 |
(1)原式=
+3
-3
-2
=
-2
;
(2)原式=22-(
)2
=4-3
=1.
2 |
3 |
2 |
3 |
=
3 |
2 |
(2)原式=22-(
3 |
=4-3
=1.
练习册系列答案
相关题目
题目内容
2 | ||
|
27 |
18 |
|
3 |
3 |
2 |
3 |
2 |
3 |
3 |
2 |
3 |