22x2 -17x -5 = 0
ax2 bx c = 0
a = 22
b = -17
c = -5
Δ = b2-4ac
Δ = -17² - (4 * 22 * -5)
Δ = 289 - (4*-110)
Δ = 289 - (-440)
Δ = 729 Δ > 0
22x2-17x-5=0
x = -b ∓ √Δ 2a
x' = 17 - √729 2*22 = 17 - 27.0 44 = -10.0 44 = -0.227272727273
x" = 17 + √729 2*22 = 17 + 27.0 44 = 44.0 44 = 1.0
x' = -110.0
x" = 484.0
S = {x ∈ R / x' = -110.0, x" = 484.0 }