问题
解答题
(
|
答案
(
-3x x-2
)÷x x+2 x x2-4
=
÷3x(x+2)-x(x-2) (x+2)(x-2) x (x+2)(x-2)
=
•2x(x+4) (x+2)(x-2) (x+2)(x-2) x
=2(x+4)
=2x+8,
当x=1时,原式=2+8=10.
(
|
(
-3x x-2
)÷x x+2 x x2-4
=
÷3x(x+2)-x(x-2) (x+2)(x-2) x (x+2)(x-2)
=
•2x(x+4) (x+2)(x-2) (x+2)(x-2) x
=2(x+4)
=2x+8,
当x=1时,原式=2+8=10.