Question

Exercitiul 1 VA ROG REZOLVAREA COMPLETA

Answer 1

$\frac{(x-1)(x-1)-(x+1)(x+1)}{(x+1)(x-1)}$ · $\frac{x(x+1)}{8}$
·$\frac{ (x-1)^{2}- (x+1)^{2} }{(x+1)(x-1)}$$\frac{x(x+1)}{8}$=
$\frac{ x^{2}-2x+1- x^{2} -2x-1}{x-1}$·$\frac{x}{8}$=
$\frac{-4x-2}{x-1}$·$\frac{x}{8}$=
$\frac{-x(2x+1)}{4(x-1)}$