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Comment on Introduction to Algebra
Do you guys sell any books
No, we don't sell any books
No, we don't sell any books to accompany our lesson. However, we recommend that all test-takers get a recent copy of the Official Guide to GMAT Review (aka the OG).
Does it hurt my chances in
The OG2015 is perfectly fine
The OG2015 is perfectly fine to use.
Hi Brent,
If believe you made a small mistake in the last step of your answer here:
http://www.beatthegmat.com/og2016-ps-if-x-1-t296240.html
x = -1, then (x⁴ - x³ + x²)/(x - 1) = [(-1)⁴ - (-1)³ + (-1)²]/[(-1) - 1]
= [1 - (-1) + 1]/(-2)
= 1/(-2)
= -1/2
The addition [1 - (-1) + 1]/(-2) suppose to equal 3/(-2)--> -3/2
Sorry to mention that, but it could misslead or confuse some people.
Thanks
Aladdin
Question link: http://www
Question link: http://www.beatthegmat.com/og2016-ps-if-x-1-t296240.html
Thanks Aladdin! I have edited my solution accordingly.
Cheers,
Brent