-27x6y9等于( )A.(-9x3y6)3B.(-27x2y3)3C.(-3xy3)3D.-(3x2y3)3
题型:单选题难度:简单来源:不详
-27x6y9等于( )A.(-9x3y6)3 | B.(-27x2y3)3 | C.(-3xy3)3 | D.-(3x2y3)3 |
|
答案
A、(-9x3y6)3=-729x9y18; B、(-27x2y3)3=-273x6y9; C、(-3xy3)3=-27x3y9; D、-(3x2y3)3=-27x6y9; 故选D. |
举一反三
()-1=______,(π-3)0=______,(-)100×2101=______. |
如果(x+2y)2+|x-2y-6|=0,那么x=______,y=______. |
已知x,y满足x2+y2-6x+2y+10=0,则2y=______. |
先化简,再求值:如果(-m+3)2+|n-1|=0,求2(m+n)2+(m+n)(m-3n)的值. |
填空:(1)(a2b)5=______;(2)(-2pq)3=______; (3)(-anbn+1)4=______. |
最新试题
热门考点