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 = 8.0 44 = 0.181818181818
x" = 15 + √49 2*22 = 15 + 7.0 44 = 22.0 44 = 0.5
x' = 88.0
x" = 242.0
S = {x ∈ R / x' = 88.0, x" = 242.0 }