Question

what is the difference of the two polynomials?
(9x² + 8x) − (2x² + 3x)
○ 7x² + 5x
○ 7x² + 11x
○ 11x² + 5x
○ 11x² + 11x

Explanation:

Step1: Distribute the negative sign

$(9x^2 + 8x) - 2x^2 - 3x$

Step2: Combine like $x^2$ terms

$9x^2 - 2x^2 = 7x^2$

Step3: Combine like $x$ terms

$8x - 3x = 5x$

Step4: Combine results

$7x^2 + 5x$

Answer:

A. $7x^2 + 5x$