-12x2 -7x +10 = 0
ax2 bx c = 0
a = -12
b = -7
c = 10
Δ = b2-4ac
Δ = -7² - (4 * -12 * 10)
Δ = 49 - (4*-120)
Δ = 49 - (-480)
Δ = 529 Δ > 0
-12x2-7x+10=0
x = -b ∓ √Δ 2a
x' = 7 - √529 2*-12 = 7 - 23.0 -24 = -16.0 -24 = 0.666666666667
x" = 7 + √529 2*-12 = 7 + 23.0 -24 = 30.0 -24 = -1.25
x' = 96.0
x" = -180.0
S = {x ∈ R / x' = 96.0, x" = -180.0 }