
tonimontana
@tonimontanaResource Credits
Available
Used
Created
2018-01-30 12:38
RSS Feed
RE: Mathematical SBI contest #6 Results(2 SBI given away) and Solution of the Equation + Announcement
If you have one solution you can find the other by just looking at x^2+x-a=0 where a:=y^2-y . We already know x^2+x-a=0 has one real solution (x1=y-1). Factoring this polynomial gives x^2+x-a=(x-x1)*(x-x2)