If you're experiencing a roadblock with one of the Manhattan Prep GRE math strategy guides, help is here!
snap700
Students
 
Posts: 1
Joined: Thu Oct 17, 2013 4:02 pm
 

guide 1 page 155

by snap700 Sun Feb 09, 2014 3:36 pm

hi,
I try to understand question 14 in page 155 on guide 1!
any ideas?
tommywallach
Manhattan Prep Staff
 
Posts: 1917
Joined: Thu Mar 31, 2011 11:18 am
 

Re: guide 1 page 155

by tommywallach Tue Feb 11, 2014 4:00 pm

Hey Snap,

The explanations are in the back. Is there some part that didn't make sense? Basically, the answer here isn't defined, because you can't take the square root of a negative number, nor can you divide something by zero. So any values that create either of those situations results in an undefinable answer. Cool?

-t