问题
填空题
化简:(x2-4)(
|
答案
(x2-4)(
-x+2 x2-2x
)÷x-1 x2-4x+4
=x-4 x
(x+2)(x-2)[
-x+2 x(x-2)
]•x-1 (x-2)2 x x-4
=(x+2)(x-2)•
•x2-4-x2+x x(x-2)2 x x-4
=
.x+2 x-2
故答案为
.x+2 x-2
化简:(x2-4)(
|
(x2-4)(
-x+2 x2-2x
)÷x-1 x2-4x+4
=x-4 x
(x+2)(x-2)[
-x+2 x(x-2)
]•x-1 (x-2)2 x x-4
=(x+2)(x-2)•
•x2-4-x2+x x(x-2)2 x x-4
=
.x+2 x-2
故答案为
.x+2 x-2