-1x2 +4x -4 = 0
ax2 bx c = 0
a = -1
b = 4
c = -4
Δ = b2-4ac
Δ = 4² - (4 * -1 * -4)
Δ = 16 - (4*4)
Δ = 16 - (16)
Δ = 0 Δ = 0
x = -b 2*a
x = -4 2*-1
x = 2.0
S = {x ∈ R / x = 2.0}
-1x2 +4x -4 = 0
ax2 bx c = 0
a = -1
b = 4
c = -4
Δ = b2-4ac
Δ = 4² - (4 * -1 * -4)
Δ = 16 - (4*4)
Δ = 16 - (16)
Δ = 0 Δ = 0
x = -b 2*a
x = -4 2*-1
x = 2.0
S = {x ∈ R / x = 2.0}