-12x2 +10x +22 = 0
ax2 bx c = 0
a = -12
b = 10
c = 22
Δ = b2-4ac
Δ = 10² - (4 * -12 * 22)
Δ = 100 - (4*-264)
Δ = 100 - (-1056)
Δ = 1156 Δ > 0
-12x2+10x+22=0
x = -b ∓ √Δ 2a
x' = -10 - √1156 2*-12 = -10 - 34.0 -24 = -44.0 -24 = 1.83333333333
x" = -10 + √1156 2*-12 = -10 + 34.0 -24 = 24.0 -24 = -1.0
x' = 264.0
x" = -144.0
S = {x ∈ R / x' = 264.0, x" = -144.0 }