-6x2 -7x +10 = 0
ax2 bx c = 0
a = -6
b = -7
c = 10
Δ = b2-4ac
Δ = -7² - (4 * -6 * 10)
Δ = 49 - (4*-60)
Δ = 49 - (-240)
Δ = 289 Δ > 0
-6x2-7x+10=0
x = -b ∓ √Δ 2a
x' = 7 - √289 2*-6 = 7 - 17.0 -12 = -10.0 -12 = 0.833333333333
x" = 7 + √289 2*-6 = 7 + 17.0 -12 = 24.0 -12 = -2.0
x' = 30.0
x" = -72.0
S = {x ∈ R / x' = 30.0, x" = -72.0 }