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GMAT Club Legend
Joined: 03 Oct 2013
Affiliations: CrackVerbal
Posts: 4914
Own Kudos [?]: 7857 [71]
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Location: India
Founder
Joined: 04 Dec 2002
Posts: 38090
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Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3
General Discussion
Manager
Joined: 26 Jan 2016
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GMAT 1: 690 Q49 V36
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Joined: 18 Jul 2015
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sriamlan wrote:

Hello CrackVerbal, I have the below doubt

after finding the roots of the equation and putting then on a line - How do we decide whether we start from "+" or "-" ,,,, in two of your example one line starts from "+" and one line starts with "-"

Kindly explain.

Hi,

We always start from the right and take that as +ve. Then we move to the left, taking alternate signs.

I mean right most will be +ve, then the one to its left will be -ve, then +ve , then -ve and so on.

Let me know in case it is not clear.
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