问题 解答题
化简或计算:
(1)(
10000
81
 
1
4
-[3×(
7
8
0]-1-[81-0.25+(3
3
8
 -
1
3
] -
1
2
-10×0.027 
1
3

(2)
a
4
3
-8a
1
3
b
a
2
3
+2•
3ab
+4b
2
3
+[1-2(
b
a
)
1
3
3a
答案

(1)原式=(

10
3
)
1
4
-(3×1)-1-[34×(-0.25)+(
3
2
)3×(-
1
3
)
]-
1
2
-10×0.3
1
3

=

10
3
-
1
3
-1-3

=-1.

(2)原式=

a
1
3
(a
1
3
-2b
1
3
)(a
2
3
+2a
1
3
b
1
3
+4b
2
3
)
a
2
3
+2
3ab
+4b
2
3
+
3a
-2
3b

=a

1
3
(a
1
3
-2b
1
3
)+
3a
-2
3b
 

=

3a2
-2
3ab
+
3a
-2
3b

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