Page 1 of 1

GR9768 Q 31

Posted: Tue Apr 06, 2010 2:59 pm
by mathQ
Which of the following CANNOT be the root of the polynomial in x of the form 9x^5 + ax^3 + b, where a and b are integers

A) -9
B) -5
C) 1/4
D) 1/3
E) 9

Re: GR9768 Q 31

Posted: Tue Apr 06, 2010 3:00 pm
by EugeneKudashev
answer is C, 1/4. refer to rational roots theorem.

Re: GR9768 Q 31

Posted: Tue Apr 06, 2010 3:06 pm
by mathQ
EugeneKudashev wrote:answer is C, 1/4. refer to rational roots theorem.
Awesome !!

It did not click me !!!

Re: GR9768 Q 31

Posted: Tue Apr 06, 2010 3:13 pm
by EugeneKudashev
yeah man :) it is :) cheers. you sit on saturday too?

Re: GR9768 Q 31

Posted: Tue Apr 06, 2010 11:01 pm
by speedychaos4
EugeneKudashev wrote:yeah man :) it is :) cheers. you sit on saturday too?
Hey man, I'm gonna sit on Sat. But I don't have too much knowledge about abstract algebra and topology right now, so I'm really stressed out...