Not really complex
Algebra
Level
3
Suppose \(x\) is a complex number such that \(4x^2+2x+1=0\). Then,
\[\large x^3+x^6+x^9+x^{12}+\ldots = \frac ab\]
where \(a\) and \( b\) are coprime positive integers. Find the value of \(a+b\).
by
Joshua Chin