Question

what is the gcf of -30a^3, 5a^4

Answer 1

\[5a^3\]

Answer 2

since it is both a factor of
\[5a^4\] via
\[5a^3\times a = 5a^4\] and also a factor of
\[-30x^3\] since
\[-6\times 5a^3=-30a^3\]