С)x^2-1/x+1 - x^2+1/x-1=(x^2-1)(x-1)-(x^2+1)(x+1) / (x+1)(x-1) =
=x^3-x^2-x+1-x^3-x^2-x-1 / (x+1)(x-1)=
=-2x^2-2x / (x+1)(x-1) =
= -2x(x+1)/(x+1)(x-1)=
=-2x/x-1
Ответ:-2х / х-1
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
С)x^2-1/x+1 - x^2+1/x-1=(x^2-1)(x-1)-(x^2+1)(x+1) / (x+1)(x-1) =
=x^3-x^2-x+1-x^3-x^2-x-1 / (x+1)(x-1)=
=-2x^2-2x / (x+1)(x-1) =
= -2x(x+1)/(x+1)(x-1)=
=-2x/x-1
Ответ:-2х / х-1