Isiah determined that 5a2 is the GCF of the polynomial

a3 - 25a2b5 - 35b4. Is he correct? Explain.

No, Isiah is not correct. The GCF of the coefficients is 1, and there are no common variables among all three terms of the polynomial. 5b4 is a factor of - 25a2b5 and - 35b4, but not a3. Additionally, a2 is a factor of a3 and - 25a2b5, but not - 35b4.

Ok, easy way is that we divide each term by the GCF and if it doesn't divide evenly, then it is not valid

first one

5a^2 divide by a^3

we see that we cannot since the power is higher and there is no 5 so it is not the GCF