22x2 -14x -8 = 0
ax2 bx c = 0
a = 22
b = -14
c = -8
Δ = b2-4ac
Δ = -14² - (4 * 22 * -8)
Δ = 196 - (4*-176)
Δ = 196 - (-704)
Δ = 900 Δ > 0
22x2-14x-8=0
x = -b ∓ √Δ 2a
x' = 14 - √900 2*22 = 14 - 30.0 44 = -16.0 44 = -0.363636363636
x" = 14 + √900 2*22 = 14 + 30.0 44 = 44.0 44 = 1.0
x' = -176.0
x" = 484.0
S = {x ∈ R / x' = -176.0, x" = 484.0 }