what is the sum of the polynomials? (-x² + 9) + (-3x² - 11x + 4) -4x² - 2x + 4 -4x² - 11x + 13 2x² + 20x + 4…
what is the sum of the polynomials? (-x² + 9) + (-3x² - 11x + 4) -4x² - 2x + 4 -4x² - 11x + 13 2x² + 20x + 4 2x² + 11x + 5
Answer
Explanation:
Step1: Remove parentheses
$(-x^{2}+9)+(-3x^{2}-11x + 4)=-x^{2}+9-3x^{2}-11x + 4$
Step2: Combine like - terms
Combine the $x^{2}$ terms: $-x^{2}-3x^{2}=-4x^{2}$ Combine the constant terms: $9 + 4=13$ The sum is $-4x^{2}-11x + 13$
Answer:
$-4x^{2}-11x + 13$ (corresponding to the second option in the multiple - choice list)