题目内容
计算:
(1)
-
+(1-
)0-|
-2|;
(2)(
+
)(
-
)-(
-
)2.
(1)
|
| 12 |
| 3 |
| 3 |
(2)(
| 8 |
| 48 |
| 2 |
| 12 |
| 2 |
| 3 |
(1)原式=
-2
+1-(2-
)
=
-2
+1-2+
=-
-1;
(2)原式=(2
+4
)(
-2
)-(2+3-2
)
=2(
+2
)(
-2
)-(5-2
)
=2(2-12)-5+2
=-25+2
.
| ||
| 3 |
| 3 |
| 3 |
=
| ||
| 3 |
| 3 |
| 3 |
=-
2
| ||
| 3 |
(2)原式=(2
| 2 |
| 3 |
| 2 |
| 3 |
| 6 |
=2(
| 2 |
| 3 |
| 2 |
| 3 |
| 6 |
=2(2-12)-5+2
| 6 |
=-25+2
| 6 |
练习册系列答案
相关题目