MATH
posted by Please help!!! .
Greatest common factor of
4x^2y^3 and 6xy^2

2xy^2
after factor removed
2xy and 3 are left 
I don't understand

2xy^2 is the greatest factor of
4x^2y^3 and 6xy^2
after you factor 2xy^2 from
4x^2y^3 and 6xy^2
2xy and 3 remain 
Simplify:
2x^2y^5/
8x^3y^5