Question

СРОЧНО сократите дробь

5x^2 - 4x - 1
_________
x^2 - 1

Answer 1

 5(x-1)(x+1/5)         (x-1)(5x+1)     5x+1

=___________=_____________=______

      x² -1                (x-1)(x+1)            x+1