计算:(1)(a 2 ) 3 •(a 2 ) 4 ÷(a 2 ) 5 ;(2)[x(x 2 y 2 -xy)-y(x 2
1个回答
(1)原式=a
6
•a
8
÷a
10
=a
14
÷a
10
=a
4
;
(2)原式=(x
3
y
2
-x
2
y-x
2
y-x
3
y
2
)÷3x
2
y=-2x
2
y÷3x
2
y= -
2
3 .
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