Answer:
GCF = 6*x²*y²
Explanation:
GCF - greatest common factor
We have to find greatest factor that are present in both expressions.
72x³y² and 210x²y⁵
72x²xy² and 210x²y²y³
72 = 8*9 = 4*2*3*3 = 6*12
210 = 3*7*10 = 3*7*2*5= 6*35
6*12*x²xy² and 6*35*x²y²y³
GCF = 6*x²*y²