1 votes 1 votes Find the coefficient of $x^4$ in the series expansion of $(1+x+x^2)^{-4}$? How do you expand $(1+x+x^2)^{-4}$? Using Taylor series? Mathematical Logic engineering-mathematics + – amarVashishth asked Dec 3, 2015 amarVashishth 442 views answer comment Share Follow See 1 comment See all 1 1 comment reply rude commented Apr 12, 2016 reply Follow Share http://math.stackexchange.com/questions/616806/find-coefficient-of-x8-in-1-2x3x2-4x35x4-6x57x66 Use this techniques to solve this. 0 votes 0 votes Please log in or register to add a comment.