问题 解答题
计算:(1)2
48
-6
1
3
+5
12

(2)(2
3
-5
2
)(
3
-2
2
)

(3)(
6
+1
2
)
2
+(
6
-1
2
)
2

(4)|-2|-(1+
2
)0+
4
答案

(1)2

48
-6
1
3
+5
12

=8

3
-2
3
+10
3

=(8-2+10)

3

=16

3

(2)(2

3
-5
2
)(
3
-2
2
)

=2

3
×
3
-2
3
×2
2
-5
2
×
3
+5
2
×2
2

=6-4

6
-5
6
+20

=26-9

6

(3)(

6
+1
2
)2+(
6
-1
2
)
2

=

6+2
6
+1
4
+
6-2
6
+1
4

=

7
2

(4)|-2|-(1+

2
)0+
4

=2-1+2

=-1.

单项选择题
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