Simplify

(1001^2-999^2)/(101^2-99^2) = ?

Correct answer is 10

Can yanyone show me how to solve the problem in the simplest way possible. I feel like factoring some number is necessary.

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rros0770: Senior | Next Rank: 100 Posts; Posts: 46; Joined: Fri Mar 14, 2008 1:39 pm; Thanked: 3 times

by rros0770 » Tue Nov 30, 2010 3:30 pm

Yep, dead on with needing to factoring it.

Check this post:

https://www.beatthegmat.com/gmat-prep-ex ... 17656.html

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