Find the greatest common factor (GCF/HCF) of the following polynomials:

The numerical coefficients of given numerical are 6,18

Greatest common factor of 6, 18 is 6

Common literals appearing in given numerical are x and y

Smallest power of x in three binomials = 2

Smallest power of y in three binomials = 1

Binomials of common literals with smallest power= x²y

Hence, the greatest common factor = 6x²y