22x2 -13x +1 = 0
ax2 bx c = 0
a = 22
b = -13
c = 1
Δ = b2-4ac
Δ = -13² - (4 * 22 * 1)
Δ = 169 - (4*22)
Δ = 169 - (88)
Δ = 81 Δ > 0
22x2-13x+1=0
x = -b ∓ √Δ 2a
x' = 13 - √81 2*22 = 13 - 9.0 44 = 4.0 44 = 0.0909090909091
x" = 13 + √81 2*22 = 13 + 9.0 44 = 22.0 44 = 0.5
x' = 44.0
x" = 242.0
S = {x ∈ R / x' = 44.0, x" = 242.0 }