# Hard SAT Math Question 81 — Video Explanation | 1600.now

Source: https://1600.now/hard/81

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81

Which of the following expressions has a factor of $x + 8a$, where $a$ is a positive integer constant?

A

$2x^2 + 20x + 16a$

B

$2x^2 + 30x + 16a$

C

$2x^2 + 40x + 16a$

D

$2x^2 + 50x + 16a$