-12x2 -2x +10 = 0
ax2 bx c = 0
a = -12
b = -2
c = 10
Δ = b2-4ac
Δ = -2² - (4 * -12 * 10)
Δ = 4 - (4*-120)
Δ = 4 - (-480)
Δ = 484 Δ > 0
-12x2-2x+10=0
x = -b ∓ √Δ 2a
x' = 2 - √484 2*-12 = 2 - 22.0 -24 = -20.0 -24 = 0.833333333333
x" = 2 + √484 2*-12 = 2 + 22.0 -24 = 24.0 -24 = -1.0
x' = 120.0
x" = -144.0
S = {x ∈ R / x' = 120.0, x" = -144.0 }