22x2 +8x -14 = 0
ax2 bx c = 0
a = 22
b = 8
c = -14
Δ = b2-4ac
Δ = 8² - (4 * 22 * -14)
Δ = 64 - (4*-308)
Δ = 64 - (-1232)
Δ = 1296 Δ > 0
22x2+8x-14=0
x = -b ∓ √Δ 2a
x' = -8 - √1296 2*22 = -8 - 36.0 44 = -44.0 44 = -1.0
x" = -8 + √1296 2*22 = -8 + 36.0 44 = 28.0 44 = 0.636363636364
x' = -484.0
x" = 308.0
S = {x ∈ R / x' = -484.0, x" = 308.0 }