Answer
Diverges
Work Step by Step
$\lim _{k\rightarrow \infty }\dfrac {k^{2}}{k^{2}-2k+5}=\lim _{k\rightarrow \infty }\dfrac {1}{1-\dfrac {2}{k}+\dfrac {5}{k^{2}}}=1\neq 0\Rightarrow \sum ^{\infty }_{k=1}\dfrac {k^{2}}{k^{2}-2k+5}$
Diverges