Question

Find the sum: (3x^2 + 5x − 8) + (5x^2 − 13x − 5)

Answer 1

Answer:

C

Step-by-step explanation:

Given

(3x² + 5x - 8) + (5x² - 13x - 5) ← remove the parenthesis

= 3x² + 5x - 8 + 5x² - 13x - 5 ← collect like terms

= 8x² - 8x - 13 → C

Answer 2

Answer:

C. $\displaystyle 8x^2 - 8x - 13$

Step-by-step explanation:

All you are doing is combining like-terms:

$\displaystyle 8x^2 - 8x - 13 = [3x^2 + 5x - 8] + [5x^2 - 13x - 5]$

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