Question

Решите уравнение (с решением)
2x²+x-1
---------- = 0
x²-1

Answer 1

(2x² +x -1)/(x² -1) =0
(x +1)(2x -1) /(x -1)(x +1) =0
(2x -1) /(x -1) =0
2x -1 =0*(x -1)
2x -1 =0
2x =1
x =1/2
x =0.5