Question

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

Explanation:

Step1: Group like terms

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

Step2: Combine constant terms

$-5 + 4 = -1$

Step3: Assemble the sum

$11x^2 + x - 1$

Answer:

C. $11x^2 + x - 1$