Respuesta :

Answer:

[tex] - 4 {x}^{2} - 11x + 13[/tex]

Step-by-step explanation:

[tex]( - {x}^{2} + 9) + ( - 3 {x}^{2} - 11x + 4)[/tex]

[tex] - {x}^{2} + 9 - 3 {x}^{2} - 11x + 4[/tex]

[tex] - 4 {x}^{2} - 11x + 13[/tex]

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