# How do you factor 3m^4+243?

$3 \left({m}^{4} + 81\right)$
No $m$ can be factored out of both terms, since $m$ isn't a factor of $243$ (it's a variable). So, since $243$ is divisible by $3$, we can factor a $3$ out of the entire equation, put the rest in parentheses, and divide each term with $3$ as such:
$3 \left({m}^{4} + 81\right)$