ОШ
Ольга Шевченко
Ответ
2 - 3x + x^2 = 2*(x-1)*Vx
__ 2 - 3x + x^2 = 0
__ x^2 - 3x + 2 = (x-2)(x-1)
=>
(x-2)(x-1) = 2*(x-1)*Vx
x - 1 = 2Vx
x - 2Vx - 1 = 0
Vx = t
t^2 - 2t - 1 = 0
t1,2 = (2 +- V8)/2 = 1 +- V2
Vx = t1 = 1 + V2 => x = (1+V2)^2 = 3+2V2
Vx = t2 = 1 - V2 => x = (1-V2)^2 = 3-2V2