计算:
(﹣x2y)2=
(﹣2)﹣2=
﹣2x2
(﹣x)3=
(﹣0.25)2014×42015= .
(﹣1)2015+(﹣π)0+2﹣2= .
(﹣x2y)2=
(﹣2)﹣2=
﹣2x2

(﹣0.25)2014×42015= .
(﹣1)2015+(﹣π)0+2﹣2= .
计算:(1) 5( m2 )6-3 (-m4)3 (2) 214×(-
)7
(3)
(4) (x-y)
(y-x)
— 2[(x-y)3]3

(3)


