Leave it! If you are told the roots are integers then you can try and factorise 112 to get factors adding to 0 (coeff of x^3)….but if not, leave it. CAT shouldn’t be asking this kind of thing. And if it does. you shouldn’t be wasting time on it until you’ve done every other question.
CAT-holics 
Dear J,
how would you do this using your “difference method”. which u posted earlier. Img below. 🙂
https://crackthecat.wordpress.com/2013/01/29/fixed-and-variable-costs-2/
regards
J
another small Question, how on earth do we get an idea that m-7 would be a factor of this power 4 equation. Img of the Question and Equation.
how to solve cubic and power 4 eqns. plz help sir.
Leave it! If you are told the roots are integers then you can try and factorise 112 to get factors adding to 0 (coeff of x^3)….but if not, leave it. CAT shouldn’t be asking this kind of thing. And if it does. you shouldn’t be wasting time on it until you’ve done every other question.
regards
J
Hello J,
Can you help with me this question?
link:
http://imgur.com/Mu9zQ9T
Please tell me to solve the quickest ways to solve the question involving ratios(large and very large). It will be very helpful for me.
Thanks and Regards,
Vaibhav