Answer:
[tex]2 {x}^{2} - 8x - 6 + (9 {x}^{2} - 8) \\ = 2 {x}^{2} - 8x - 6 + 9 {x}^{2} - 8 \\ = 11 {x}^{2} - 8x - 14 \\ thank \: you[/tex]