Find the GFC of each set a)20x,10x^3,8x^2 b)12a,18^3,6a^2 c)10x^2,15x,25x d)21a^2,35a^2,7a?

I think is GCF:





The Greatest Common Factor is the largest number that is a common factor of two or more numbers.





Example: 20x, 10x^3, 8x^2





GCF = 2x