22x2 +15x +2 = 0
ax2 bx c = 0
a = 22
b = 15
c = 2
Δ = b2-4ac
Δ = 15² - (4 * 22 * 2)
Δ = 225 - (4*44)
Δ = 225 - (176)
Δ = 49 Δ > 0
22x2+15x+2=0
x = -b ∓ √Δ 2a
x' = -15 - √49 2*22 = -15 - 7.0 44 = -22.0 44 = -0.5
x" = -15 + √49 2*22 = -15 + 7.0 44 = -8.0 44 = -0.181818181818
x' = -242.0
x" = -88.0
S = {x ∈ R / x' = -242.0, x" = -88.0 }