Hello: Just wondering if the solution of the problem: Try-It#3-4, on the ebook version of The Advanced GMAT Quant Guide (page 58) is correct. Is x=1? (1)x^2=1/x^2 (2)x^2=1/x Statement (1): Clearly insufficient (x could be 1 or -1) But statement (2) could also be this algebraic equation: x^3=1 so =&g...

Ok Ron thanks for your response, but in this case, if this algebraic formula (a^3- b^3)= (a-b)(a^2+ab+b^2) is applied to the statement (2) x^2=1/x, this expression is obtained: (x-1)(x^2+x+1)=0, wherein the non-real numbers are from the second part [ (x^2+x+1) ]. So in this particular case if the pr...

Hello:

I cannot attach the screen shoot of the Gmat Prep question (don't know how...)

But the official answer is indeed choice A, I chose E, though,,,

Could you please elaborate about the OA?

Thanks in advance,

Sure, I've created a blog just because of this, so I'll wait for a super awesome explanation! - kidding Hope you guys can see the upload well, here the url: https://racanothingmuch.blogspot.com/b/post-preview?token=wmzpIjwBAAA.fLpqbE1vcCSNSD3zF-9y4A.7aLDDud315jZQO36txhvhQ&postId=5092263508204826...

Dirt roads may evoke the bucolic simplicity of another century, but financially strained townships point out that dirt roads cost twice as much as maintaining paved roads. (A) dirt roads cost twice as much as maintaining paved roads (B) dirt roads cost twice as much to maintain as paved roads do (C)...

Hello: Please any help, insights would be really appreciated! New hardy varieties of rice show promise of producing high yields without the costly requirements of irrigation and application of commercial fertilizer by earlier high-yielding varieties. (A) requirements of irrigation and application of...

Hello! I'm a bit confused about this one... and specifically want to find these type of questions to drill on, because I sincerely don't see big meaning or grammar issues. Please your advices are very welcome! By a vote of 9 to 0, the Supreme Court awarded the Central Intelligence Agency broad discr...

Thanks Ron!
Awesome examples!
I think I finally got this rule,

Best,

Ricardo

Thanks!