This time in math we learned how to find the greates common factor of a polynominal. If we get something like (5 ) (15 y) then first we start with the coefficients and so between 5 and 15 5 is the gcf and for exponents it is whatever has the lowest exponent. so then u add them together so we`ll have 5 y. We have to divide the remainder so we’ll get 5 y () (3x) and there is our anwser for how to find the GCF.