Odpowiedź:
[tex]\frac{2x + 6}{x} = x + 1 /*x\\[/tex]
D ∈ R - {0}
2x + 6 = (x+1)x
2x + 6 = x² + x
-x² + x + 6 = 0
= 1² + 24 = 25
√Δ = √25 = 5
x₁ = (-b - √Δ)/2a = -1 - 5/-2 = 3
x₂ = (-b + √Δ)/2a = -1 + 5/-2 = -2
Odpowiedź: x₁ = 3 oraz x₂ = -2 , dziedzina D ∈ R - {0}
