幂的乘方和积的乘方练习题目大全
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幂的乘方和积的乘方、除法一部分
一•选择题(共4小题)
1. (2016?重庆模拟)计算:(-a2)3()
A. a6
B.- a6
C. a5
D.- a5
2. (2015?南京)计算(-xy3)2的结果是()
A. x2y6 B . - x2y6 C. x2y9 D . - x2y9
3. (2015?潜江)计算(-2a2b)3的结果是(
)
A.- 6a6b3
B.- 8a6b3
C. 8a6b3
D.- 8a5b3
4. (2015?大连)计算(-3x)2的结果是()
2 2 2 2
A. 6x
B.- 6x
C. 9x
D.- 9x
二.填空题(共16小题)
5. _________________________________________ (2015?黄浦区二模)计算:(a2)2= .
6. _________________________________________________ (2015?红桥区一模)计算
(a2)3的结果等于 ____________________________________________ .
7 . (2015 秋?江汉区期末)(-2x2)2= ___________ .
8. (2015秋?巴中期中)计算:①(-a)2? (- a)3= ____________
② _______________________ (-3x2)3= .
9. __________________________________________________ (2015春?江阴市校级期中)计算:(-2xy)3= __________________________________ .
3 2
10. (2015春?苏州校级期中)计算(-2xy )= ______________ .
11. ________________________________________________ (2015 秋?保亭县校级月考)计算:(1)a?a3= ____________________________________ ;(2)( - 2x2)3= ______ 12. __________________________________________ (2015春?南京校级月考)(-ab3)2= _____________________________________________ , (x+y)? (x+y)4= _________ .
13. __________________________________________ (2014?青河区一模)计算:(2x2)
3= ___________________________________________ .
14. ___________________________________________________ (2014?汉沽区一模)计算(2ab2)3的结果等于______________________________________________ .
15. ________________________________________________ (2016春?耒阳市校级月考)(x2)3?x+x5?x2= ____________________________________ .
16 . (2015?大庆)若a2n=5, b2n=16,则(ab)n= ___________ .
17 . (2015?河南模拟)计算:(-2以卜)3= .
2
18 . (2015春?苏州校级期末)计算(-2xy3)2= _____________ ; (-^)2014X(- 1.5 )
2015_
19 . (1999?内江)若2x=a, 4y=b,贝U 8x - 4y= __________ .
20 . (2015?黔东南州)a6十a2= __________ .
三•解答题(共10小题)
21 . (2014春?寿县期中)已知a m=2, a n=3,求a3m+2n的值.
22 . (2014春?无锡期中)已知9n+1- 32n=72,求n的值.
23. (2014春?姜堰市校级月考)已知10a =5, 10b =6,求:
(1) io 2a +io 3b 的值;
(2) 102a+3b 的值.
24. (2015?召安县校级模拟)计算:阪-(卞^) 0+ (-2) 3十3「1
V5-2
25. (2014?昆山市模拟)(1)计算:(2 +(3-5)「屈.
2
-[3x - 2y+2 (xy+y )],其中 x=- (2) (3x - 1) (2x+3)-( x+3) (x - 3). 27. (2014秋?万州区校级期中)已知3m =6, 9n =2,求32m 「4n 的值.
28. (2014春?维扬区校级期中)已知:5a =4, 5b =6, 5c =9,
(1) 52a+b 的值;
(2) 5b -
2c 的值; (3) 试说明:2b=a+c.
29. (2013?金 湾区一模)计算:’一 I 匚」「.- •「- ': : :
■■ I . 30. (2013春?温岭市校级期末)(1)计算:(g ) -2 - 2以。・1药吃QQ4 °+丨一 11 (2)化简: ID 2
呂一曲 _ nH-1
2 _ m m _ 2 2 _ rj
(2)化简:求值.3 (x 2 - 2xy ) y=-3.
26. (2013秋?徐汇区校级期末)计算或化简:
(1) 23-寺 °-(寺)-2;