-12x2 -10x +2 = 0
ax2 bx c = 0
a = -12
b = -10
c = 2
Δ = b2-4ac
Δ = -10² - (4 * -12 * 2)
Δ = 100 - (4*-24)
Δ = 100 - (-96)
Δ = 196 Δ > 0
-12x2-10x+2=0
x = -b ∓ √Δ 2a
x' = 10 - √196 2*-12 = 10 - 14.0 -24 = -4.0 -24 = 0.166666666667
x" = 10 + √196 2*-12 = 10 + 14.0 -24 = 24.0 -24 = -1.0
x' = 24.0
x" = -144.0
S = {x ∈ R / x' = 24.0, x" = -144.0 }