Юл
Юлия
у = (x-1)/(x-2) - 3x/(x+2)
у = 1/2; х = ?
ОДЗ : х не = 2, х не = -2.
1/2 = (x-1)/(x-2) - 3x/(x+2)
(x-2)(x+2) = 2(x-1)(x+2) - 2*3x(x-2)
x^2 - 4 = 2x^2 +2x-4-6x^2 +12x
5x^2 - 14x = 0
x(5x-14) = 0
x1 = 0
5x - 14 = 0
x2 = 14/5 = 2,8