SOLUTION: Factor out the GCF: 15x^2y^3-20xy^2+5xy I really have no clue and I don't know how to factor out the greatest common factor (I'm assuming thats what it means ?)

You can put this solution on YOUR website!
Yes, that's what GCF means...Greatest Common Factor.
Factor out the GCF:

Look at the three terms to find a common element. First, all of the coefficients (the integers in front of the variables) are divisible by 5, so 5 is a factor of these integers.
Now look at the variables for a common factor. They all have at least one x and one y, so xy would be a factor. So you can factor out the 5 and the xy to get:

To check the answer, just multiply the by the and you should get back what you started with. Try it!