22x2 -16x -6 = 0
ax2 bx c = 0
a = 22
b = -16
c = -6
Δ = b2-4ac
Δ = -16² - (4 * 22 * -6)
Δ = 256 - (4*-132)
Δ = 256 - (-528)
Δ = 784 Δ > 0
22x2-16x-6=0
x = -b ∓ √Δ 2a
x' = 16 - √784 2*22 = 16 - 28.0 44 = -12.0 44 = -0.272727272727
x" = 16 + √784 2*22 = 16 + 28.0 44 = 44.0 44 = 1.0
x' = -132.0
x" = 484.0
S = {x ∈ R / x' = -132.0, x" = 484.0 }