问题
解答题
先化简再求值:(
|
答案
原式=
÷3(x+1)-(x-1) (x-1)(x+1) x (x+1)(x-1)
=
•2x+4 (x-1)(x+1) (x+1)(x-1) x
=2x+4 x
当x=
时,原式=10.1 2
先化简再求值:(
|
原式=
÷3(x+1)-(x-1) (x-1)(x+1) x (x+1)(x-1)
=
•2x+4 (x-1)(x+1) (x+1)(x-1) x
=2x+4 x
当x=
时,原式=10.1 2