-12x2 +14x -2 = 0
ax2 bx c = 0
a = -12
b = 14
c = -2
Δ = b2-4ac
Δ = 14² - (4 * -12 * -2)
Δ = 196 - (4*24)
Δ = 196 - (96)
Δ = 100 Δ > 0
-12x2+14x-2=0
x = -b ∓ √Δ 2a
x' = -14 - √100 2*-12 = -14 - 10.0 -24 = -24.0 -24 = 1.0
x" = -14 + √100 2*-12 = -14 + 10.0 -24 = -4.0 -24 = 0.166666666667
x' = 144.0
x" = 24.0
S = {x ∈ R / x' = 144.0, x" = 24.0 }