问题 解答题
化简:
(1)
32
-
1
8
+
800
                    
(2)(
6
-2
15
 )
3
-6
1
2

(3)
50
-
32
8
+4              
(4)(
2
+
6
2-(
7
+
4
)(
7
-
4
答案

(1)原式=4

2
-
1
4
2
+20
2
=
95
4
2

(2)原式=

18
-2
45
-3
2

=3

2
-6
5
-3
2

=-6

5

(3)原式=

5
2
-4
2
2
2
+4

=

2
2
2
+4

=

1
2
+4

=

9
2

(4)原式=(

2
2+2
12
+(
6
2-[(
7
2-(
4
2]

=2+4

3
+6-3

=5+4

3

问答题
单项选择题