How do I put a quadratic like (1-x+x^2)^-1 in a form where I can use binomial theorem? I've tried completing the square but you end up with a quartic in the expansion.
Posted from TSR Mobile
x Turn on thread page Beta
Binomial Theorem watch
- Thread Starter
- 31-07-2016 19:17
- 31-07-2016 19:19
You should know the expansion of (1-y)^-1. So just replace the y's with (x-x^2).
Hint: (1-y)^-1 = 1+y+y^2+y^3+...Last edited by Math12345; 31-07-2016 at 19:22.