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 = -44.0 44 = -1.0
x" = -10 + √1156 2*22 = -10 + 34.0 44 = 24.0 44 = 0.545454545455
x' = -484.0
x" = 264.0
S = {x ∈ R / x' = -484.0, x" = 264.0 }