Question

What is the greatest common factor?

Answer 1

The GCF of 20y⁹ + 5y⁶ is 5y⁶.

The factors of 20y^9 are 2(x2) 5, and y(x9).
The factors of 5y^6 are 5 and y(x6).
The factors they share are 5 and six y's, so the GCF is 5y^6.

Answer 2

here is a solution :
20y9 +5y6 = 5y6(4y3 +1 )
the greatest common factoris : 5y6