Answer:
[tex]11x^{2}+x-1[/tex]
Step-by-step explanation:
we have
[tex](11x^{2} -5) +(x+4)[/tex]
we know that
The sum of a quadratic equation and a linear equation will be a quadratic equation
so
Combine like terms
[tex](11x^{2})+(x)+(-5+4)[/tex]
[tex]11x^{2}+x-1[/tex]
