What is the radius of convergence of the series ?

MATHEMATICS · Numerical · AP · Calculus BC · Infinite Sequences and Series · Infinite Sequences and Series

Problem

What is the radius of convergence of the series ∑n=0∞(x−4)2n3n\sum_{n=0}^{\infty}\frac{(x-4)^{2n}}{3^n}?

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