-6x2 +17x -11 = 0
ax2 bx c = 0
a = -6
b = 17
c = -11
Δ = b2-4ac
Δ = 17² - (4 * -6 * -11)
Δ = 289 - (4*66)
Δ = 289 - (264)
Δ = 25 Δ > 0
-6x2+17x-11=0
x = -b ∓ √Δ 2a
x' = -17 - √25 2*-6 = -17 - 5.0 -12 = -22.0 -12 = 1.83333333333
x" = -17 + √25 2*-6 = -17 + 5.0 -12 = -12.0 -12 = 1.0
x' = 66.0
x" = 36.0
S = {x ∈ R / x' = 66.0, x" = 36.0 }