Odpowiedź:
x² + 3x - 1 = 5(x + 1)
x² + 3x - 1 = 5x + 5
x² - 2x - 6 = 0
Δ = 28
[tex]\sqrt{Delta} = \sqrt{28} = 2\sqrt{7}[/tex]
[tex]x_{1} = \frac{2 - 2\sqrt{7}}{2} = 1 - \sqrt{7}[/tex]
[tex]x_{2} = \frac{2+2\sqrt{7}}{2} = 1+\sqrt{7}[/tex]
[tex]x_{1} = 1 - \sqrt{7}[/tex]
[tex]x_{2} = 1 + \sqrt{7}[/tex]
