题目内容
计算:
(1)2
+
-4
(2)(3
+2
)(3
-2
)
(3)
×
+
×
(4)(-
)-1+(π-
)0+
.
(1)2
5 |
5 |
5 |
(2)(3
2 |
3 |
2 |
3 |
(3)
32 |
|
2 |
5 |
(4)(-
1 |
2 |
3 |
(-2)2 |
(1)原式=-
;
(2)原式=(3
)2-(2
)2=18-12=6;
(3)原式=
+
=4+
;
(4)原式=-2+1+2=1.
5 |
(2)原式=(3
2 |
3 |
(3)原式=
32×
|
2×5 |
10 |
(4)原式=-2+1+2=1.
练习册系列答案
相关题目