问题
解答题
化简:(x+
|
答案
(x+
)÷(2+x x2-1
-1 x-1
)1 x+1
=
÷x3-x+x x2-1 2(x2-1)+x+1-x+1 (x+1)(x-1)
=
•x3 (x+1)(x-1) (x+1)(x-1) 2x2
=
.x 2
化简:(x+
|
(x+
)÷(2+x x2-1
-1 x-1
)1 x+1
=
÷x3-x+x x2-1 2(x2-1)+x+1-x+1 (x+1)(x-1)
=
•x3 (x+1)(x-1) (x+1)(x-1) 2x2
=
.x 2