Hi Nums99,

I've posted an explanation for this question here:

https://gmatclub.com/forum/the-product- ... l#p2334197

GMAT assassins aren't born, they're made,
Rich
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Hi Nums99,

When you're dealing with a 'squared term', it's likely that you are going to have more than one type of answer.

For example, if X^2 = 16.... then X can be +4 or -4.

In that same way, when you're dealing with a 'squared term' and an inequality, you will likely have more than one 'group' of numbers that fits the inequality.

For example if Y^2 > 9.... then Y can be any number that is GREATER than 3 OR any number that is LESS than -3.
so...
X > 3 or X < -3

Those are two separate groups of numbers though (one is positive numbers, the other is negative numbers), so you would not write that as one 'big' inequality; it's two separate inequalities.

GMAT assassins aren't born, they're made,
Rich
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