22x2 -10x -12 = 0
ax2 bx c = 0
a = 22
b = -10
c = -12
Δ = b2-4ac
Δ = -10² - (4 * 22 * -12)
Δ = 100 - (4*-264)
Δ = 100 - (-1056)
Δ = 1156 Δ > 0
22x2-10x-12=0
x = -b ∓ √Δ 2a
x' = 10 - √1156 2*22 = 10 - 34.0 44 = -24.0 44 = -0.545454545455
x" = 10 + √1156 2*22 = 10 + 34.0 44 = 44.0 44 = 1.0
x' = -264.0
x" = 484.0
S = {x ∈ R / x' = -264.0, x" = 484.0 }