(x + 2)(x + 3) = x²
x² + 3x + 2x + 6 = x²
x² + 3x + 2x - x² = -6
5x = -6 / : 5
x = -1,2
Szczegółowe wyjaśnienie:
[tex] {x}^{2} + 3x + 2x + 6 = {x}^{2} \\ 5x = - 6 \\ x = - \frac{6}{5} = - 1 \frac{1}{5} = - 1.2[/tex]
