Question

what is the sum of the polynomials
$11x^2 - 5$
$\underline{\quad \\ x + 4}$
\bigcirc $10x^2 - 9$
\bigcirc $11x^2 - x - 9$
\bigcirc $11x^2 + x - 1$
\bigcirc $12x^2 - 1$

Explanation:

Step1: Identify polynomials to add

Polynomials: $11x^2 - 5$ and $x + 4$

Step2: Combine like terms

$11x^2 + x + (-5 + 4) = 11x^2 + x - 1$

Answer:

11x² + x - 1 (the third option)