Question

what's the greatest common factor of 24a^3c ang 3a

Answer 1

Hi there! The greatest common factor/divisor (gcf / gcd) is 3a.

We can see this by writing the numbers as multipliers:
$24a ^{3} c = 8 * 3 * a* a* a * c$
$3a = 3 * a$

Now we can see that the factors which are in common are 3 and a. Therefore the greatest common factor/divisor (gcf / gcd) of the two numbers is 3a.