计算(1)(-23)12÷(-23)9(2)(12)-2-(-1999)0÷(-13)2(3)a4-a4+(a2)4-(-3a4)2(4)(-8)2009×0.1252010.-数学

题目简介

计算(1)(-23)12÷(-23)9(2)(12)-2-(-1999)0÷(-13)2(3)a4-a4+(a2)4-(-3a4)2(4)(-8)2009×0.1252010.-数学

题目详情

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
题型:解答题难度:中档来源:不详

答案

(1)原式=(-class="stub"2
3
)3=-class="stub"8
27

(2)原式=4-1÷class="stub"1
9
=4-9=-5;
(3)原式=a8+a8-9a8=-7a8;
(4)原式=(-8×0.125)2009×0.125=-0.125.

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