-12x2 -17x +14 = 0
ax2 bx c = 0
a = -12
b = -17
c = 14
Δ = b2-4ac
Δ = -17² - (4 * -12 * 14)
Δ = 289 - (4*-168)
Δ = 289 - (-672)
Δ = 961 Δ > 0
-12x2-17x+14=0
x = -b ∓ √Δ 2a
x' = 17 - √961 2*-12 = 17 - 31.0 -24 = -14.0 -24 = 0.583333333333
x" = 17 + √961 2*-12 = 17 + 31.0 -24 = 48.0 -24 = -2.0
x' = 84.0
x" = -288.0
S = {x ∈ R / x' = 84.0, x" = -288.0 }