问题 解答题
计算
(1)(3
2
+
48
)(
18
-4
3
)

(2)(1-
3
)2-
2
3
+1
+(
2
3
-1
)0
答案

(1)原式=(3

2
+4
3
)(3
2
-4
3

=(3

2
2-(4
3
2

=18-48

=-30;

(2)原式=(1-

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

=(1-

3
2-(
3
-1)+1

=1+3-2

3
-
3
+1+1

=6-3

3

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