22x2 -17x -14 = 0
ax2 bx c = 0
a = 22
b = -17
c = -14
Δ = b2-4ac
Δ = -17² - (4 * 22 * -14)
Δ = 289 - (4*-308)
Δ = 289 - (-1232)
Δ = 1521 Δ > 0
22x2-17x-14=0
x = -b ∓ √Δ 2a
x' = 17 - √1521 2*22 = 17 - 39.0 44 = -22.0 44 = -0.5
x" = 17 + √1521 2*22 = 17 + 39.0 44 = 56.0 44 = 1.27272727273
x' = -242.0
x" = 616.0
S = {x ∈ R / x' = -242.0, x" = 616.0 }