# Hard SAT Math Question 46 — Video Explanation | 1600.now

Source: https://1600.now/hard/46

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46

$4x^2 + kx - 180 = (mx+n)(x-p)$  
Given that $m$, $n$, and $p$ are integers, which of the following must be true?

A

$n$ is a factor of $k$

B

$m$ is a factor of $k$

C

$k$ is a factor of $180$

D

$p$ is a factor of $180$