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pkw209
- Master | Next Rank: 500 Posts
- Posts: 266
- Joined: Mon Oct 19, 2009 9:46 pm
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- GMAT Score:690
Just a quick question about absolute values.
Example:
(1) |x + 3| = 4x - 3
Manhattan gmat says you should take the +/- of the side of the equation opposite the absolute value.
So in this case, x+3 = +(4x - 3) AND x+3 = -(4x-3)
However, kaplan says that you should take the +/- of the absolute value side.
In other words +(x+3) = 4x-3 AND -(x+3) = 4x-3.
My question is, does it matter which method you choose? It doesn't seem to matter since I get the same answer, but just want expert confirmation.
Thanks!
Example:
(1) |x + 3| = 4x - 3
Manhattan gmat says you should take the +/- of the side of the equation opposite the absolute value.
So in this case, x+3 = +(4x - 3) AND x+3 = -(4x-3)
However, kaplan says that you should take the +/- of the absolute value side.
In other words +(x+3) = 4x-3 AND -(x+3) = 4x-3.
My question is, does it matter which method you choose? It doesn't seem to matter since I get the same answer, but just want expert confirmation.
Thanks!
