Isiah determined that 5a2 is the gcf of the polynomial
a3 – 25a2b5 – 35b4. is he correct? explain.

Factor each term
a^3=a*a*a
-25a^2b^5=-1*5*5*a*a*b*b*b*b*b
-35b^4=-1*5*7*b*b*b*b

to be a common factor, it must be found in all of them
5a^2=5*a*a
there are no a's in the third term (-35b^4) so it cannot be

the GCF is actually 1

Cis your correct answer