Identify the degree of each term of each polynomial. Then find the degree of the polynomial. xy^3 + 7x^3y^2 - 6xy^4 + 2

I know the degree of the first term is
xy^3 is 4. I cant seem to find the second term

terms are separated by + or - signs

just add exponents of all the factors. The degrees of the terms are thus easily seen to be

4,5,5,0