Question

约分，谢谢

Answer 1

原式=(x+1)(-3x+1)/(x+1)
=-3x+1

求采纳，谢谢

追问

化简呢

追答

x(x+1)/[(x^2-1)y]
=x(x+1)/[(x+1)(x-1)y]
=x/(x-1)y
=x/(xy-y)
求采纳

Answer 2

-（ 3x²+2x-1） =-（3x-1）（x+1）
约分=-3x+1

Answer 3

1+3x