Question

X/X+1-X/1-X=8/3 é igual?​

Answer 1

x/(x + 1) - x/(1 - x) = 8/3

(x*(1 - x) - x*(x + 1))/(1 - x^2) = 8/3

(x - x^2 - x^2 - x)/(1 - x^2) = 8/3

2x^2/(x^2 - 1) = 8/3

6x^2 = 8x^2 - 8

2x^2 = 8

x^2 = 4

x1 = 2

x2 = -2