Quadratic Equations

If x^4 - 15x^2 - 10x + 24 = 0 has the roots as m-n,m,n and m+n, then find the respective values of m and n?

Hey guys.. I am anurag! I gave CAT'13 but got only 80% tile.. Now gonna try again for CAT'14. I am working and from mumbai.. I have all the required material almost from all the institutes ;-)Wanted to know if any1 out der is from mumbai so we can make a study group... Let me know if its possible 😃