The polynomial 15xy+3x^3y^4 is what degree?

Question

I do not understand how to solve this

Answer 1

the degree of a polynomial is the largest sum of powers of the variables in each term. In this case, the terms have degree

15xy: 1+1 = 2
3x^3y^4: 3+4 = 7

so, the polynomial is of degree 7.