22x2 -6x -16 = 0
ax2 bx c = 0
a = 22
b = -6
c = -16
Δ = b2-4ac
Δ = -6² - (4 * 22 * -16)
Δ = 36 - (4*-352)
Δ = 36 - (-1408)
Δ = 1444 Δ > 0
22x2-6x-16=0
x = -b ∓ √Δ 2a
x' = 6 - √1444 2*22 = 6 - 38.0 44 = -32.0 44 = -0.727272727273
x" = 6 + √1444 2*22 = 6 + 38.0 44 = 44.0 44 = 1.0
x' = -352.0
x" = 484.0
S = {x ∈ R / x' = -352.0, x" = 484.0 }