2х² + 5х - 3 / 2х²- х = 0, x ≠ 0, x ≠ 1/2.
2х² + 6x - x - 3 / x (2x - 1) = 0
2x (x + 3) - (x - 3) / x (2x - 1) = 0
(x + 3) (2x - 1) / x (2x - 1) = 0
x + 3 / x = 0
x + 3 = 0
x = -3, x ≠ 0, x ≠ 1/2.
