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Intern
Joined: 18 Nov 2011
Posts: 41
Concentration: Strategy, Marketing
GMAT Date: 06-18-2013
GPA: 3.98
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Trick to binomial factoring with large numbers? [#permalink]
 10 Jan 2013, 12:36
(Sorry if this in the wrong secton, still new here and not sure where else this would go)
I know the rules for factoring, but was wondering if there is a method/trick to handling problems where the numbers are large and obscure. For example, x^2+16x-1536
Obviously I knew the seperation of the two factors in their absolute form would be 16. I eventually was able to work my way to the answer of 32, -48 but not without a tedious process of picking a starting number (40) and working my way toward the number set.
The 16/1536 relation is not intuitive, is there a trick to arriving at 32,-48 more quickly?
Thanks
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BSchool Thread Master
Joined: 23 Mar 2011
Posts: 590
Concentration: Healthcare, Strategy
GMAT 1: 720 Q51 V35
GMAT 2: 770 Q51 V44
WE: Consulting (Health Care)
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Re: Trick to binomial factoring with large numbers? [#permalink]
10 Jan 2013, 13:25
Please check this out: quick-factoring-question-145290.htmlto add, you won't see absurd numbers on the test. hope this helps.
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Re: Trick to binomial factoring with large numbers?
[#permalink]
10 Jan 2013, 13:25
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