试题与答案

计算(1)(-23)12÷(-23)9(2)(12)-2-(-1999)0÷(-

题型:解答题

题目:

计算 
(1)(-
2
3
)12
÷(-
2
3
)9
                
(2)(
1
2
)-2
-(-1999)0÷(-
1
3
)2

(3)a4-a4+(a24-(-3a42         
(4)(-8)2009×0.1252010

答案:

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