问题
解答题
(
|
答案
(
-3x x-2
)×x x+2 x2-4 x
=
×3x x-2
-(x+2)(x-2) x
×x x+2 (x+2)(x-2) x
=3(x+2)-(x-2)
=3x+6-x+2
=2x+8.
(
|
(
-3x x-2
)×x x+2 x2-4 x
=
×3x x-2
-(x+2)(x-2) x
×x x+2 (x+2)(x-2) x
=3(x+2)-(x-2)
=3x+6-x+2
=2x+8.