问题
解答题
计算:(
|
答案
原式=(
-1 2x-1
)÷x 2x-1 1-2x+x2 1-2x
=
÷1-x 2x-1 (1-x)2 1-2x
=
•1-x 2x-1 1-2x (1-x)2
=
.1 x-1
计算:(
|
原式=(
-1 2x-1
)÷x 2x-1 1-2x+x2 1-2x
=
÷1-x 2x-1 (1-x)2 1-2x
=
•1-x 2x-1 1-2x (1-x)2
=
.1 x-1