Răspuns:
Explicație pas cu pas:
x^2 - 8x + 12 = 0
Δ = 64 - 48 = 16
x1 = (8 + 4)/2 = 6
x2 = (8 - 4)/2 = 2
y1 = 6/4 = 3/2
y2 = 2/36 = 1/18
(y - 3/2)(y - 1/18) = y^2 - 3y/2 - y/18 + 3/36 = y^2 - 27y/18 - y/18 + 1/12
= y^2 - 28y/18 + 1/12 = y^2 - 14y/9 + 1/12