GMAT Quadratic Inercepts Problem

[emilymreynolds11]

Hi all,
I am having a hard time working though this problem and was wondering if you might be able to assist:
Thanks!

If the graph of y = x2 + ax + b passes through the points (m, 0) and (n, 0), where m < n, what is the value of n - m ?

(1) 4b = a2 - 4

(2) b = 0

ANSWER: A

[messi10]

Hey,

You probably won't get a response on this forum as this is to organize study groups.

Please post this under the Math forum and according to the source of the problem, post it under the correct sub-forum (e.g. GMAT Prep, Manhattan GMAT CAT, etc)

Thanks