[tex]5 {x}^{2} - 6x - 5 = 5 \times {3}^{2} - 6 \times 3 - 5 = 5 \times 27 - 6 \times 3 - 5 = 135 - 18 - 5 = 135 - 13 = 122[/tex]
Pozdrowionka :3
