问题 解答题
计算:(1)(2-
3
)(2+
3
)

(2)(3
18
+
1
5
50
-4
1
2
32

(3)(3
12
-2
1
3
+
48
)÷2
3
答案

(1)原式=22-(

3
2=4-3=1;

(2)原式=(9

2
+
2
-2
2
)÷4
2
=8
2
÷4
2
=2;

(3)原式=(6

3
-
2
3
3
+4
3
)÷2
3

=

28
3
3
÷2
3

=

14
3

选择题
选择题