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Answer :

Answer:

[tex](gof)(x) = -5 {x}^{2} + 35x + 34[/tex]

Step-by-step explanation:

[tex](gof)(x) = g(f(x)) \\ = - 5( {x}^{2} - 7x - 9) - 11 \\ = - 5 {x}^{2} + 35x + 45 - 11 \\ = - 5 {x}^{2} + 35x + 34[/tex]

I hope I helped you^_^