-12x2 +11x -2 = 0
ax2 bx c = 0
a = -12
b = 11
c = -2
Δ = b2-4ac
Δ = 11² - (4 * -12 * -2)
Δ = 121 - (4*24)
Δ = 121 - (96)
Δ = 25 Δ > 0
-12x2+11x-2=0
x = -b ∓ √Δ 2a
x' = -11 - √25 2*-12 = -11 - 5.0 -24 = -16.0 -24 = 0.666666666667
x" = -11 + √25 2*-12 = -11 + 5.0 -24 = -6.0 -24 = 0.25
x' = 96.0
x" = 36.0
S = {x ∈ R / x' = 96.0, x" = 36.0 }