Ответ:

[tex] x_{1} = - 2, x_{2} = 5[/tex]

Объяснение:

[tex] {x}^{2} - 3x - 10 = 0 \\ {x}^{2} + 2x - 5x - 10 = 0 \\ x \times (x + 2) - 5(x + 2) = 0 \\ (x + 2) \times (x - 5) = 0 \\ x + 2 = 0 \\ x - 5 = 0 \\ x = - 2 \\ x = 5 \\ x_{1} = - 2, x_{2} = 5[/tex]