22x2 +x -6 = 0
ax2 bx c = 0
a = 22
b = 1
c = -6
Δ = b2-4ac
Δ = ² - (4 * 22 * -6)
Δ = 1 - (4*-132)
Δ = 1 - (-528)
Δ = 529 Δ > 0
22x2+x-6=0
x = -b ∓ √Δ 2a
x' = -1 - √529 2*22 = -1 - 23.0 44 = -24.0 44 = -0.545454545455
x" = -1 + √529 2*22 = -1 + 23.0 44 = 22.0 44 = 0.5
x' = -264.0
x" = 242.0
S = {x ∈ R / x' = -264.0, x" = 242.0 }