-12x2 -19x +10 = 0
ax2 bx c = 0
a = -12
b = -19
c = 10
Δ = b2-4ac
Δ = -19² - (4 * -12 * 10)
Δ = 361 - (4*-120)
Δ = 361 - (-480)
Δ = 841 Δ > 0
-12x2-19x+10=0
x = -b ∓ √Δ 2a
x' = 19 - √841 2*-12 = 19 - 29.0 -24 = -10.0 -24 = 0.416666666667
x" = 19 + √841 2*-12 = 19 + 29.0 -24 = 48.0 -24 = -2.0
x' = 60.0
x" = -288.0
S = {x ∈ R / x' = 60.0, x" = -288.0 }