Question

$\frac{x}{x-1} - \frac{1}{x+1} = \frac{2}{ x^{2} -1}$ mersi mult mult

Answer 1

numitorul comun (x²-1)

x(x+1)-(x-1)=2

x²+x-x+1=2

x²=2-1=1

x=+,- √1

x=+ 1 si x=-1