问题
计算题
(1)(-3x2)3(-4y3)2÷ (6x2y)3
(2)(-x-y)2-(2y-x)(x+2y)
答案
(1)解:
=-27·(16
)÷(216
)
=-2
(2)解:
=
= =
(1)(-3x2)3(-4y3)2÷ (6x2y)3
(2)(-x-y)2-(2y-x)(x+2y)
(1)解:
=-27·(16
)÷(216
)
=-2
(2)解:
=
= =