问题
填空题
化简:(
|
答案
(
-a-1 a2-4a+4
)÷(a+2 a2-2a
-1)4 a
=[
-a-1 (a-2)2
]÷a+2 a(a-2) 4-a a
=
•a(a-1)-(a+2)(a-2) a(a-2)2 a 4-a
=
•4-a a(a-2)2 a 4-a
=
.1 (a-2)2
故答案为:
.1 (a-2)2
化简:(
|
(
-a-1 a2-4a+4
)÷(a+2 a2-2a
-1)4 a
=[
-a-1 (a-2)2
]÷a+2 a(a-2) 4-a a
=
•a(a-1)-(a+2)(a-2) a(a-2)2 a 4-a
=
•4-a a(a-2)2 a 4-a
=
.1 (a-2)2
故答案为:
.1 (a-2)2