The degree of a polynomial is the highest degree of its terms when the polynomial is expressed in its canonical form consisting of a linear combination of monomials. The Ascending order of the given monomials are:
a. 15x11,5x10,−5x7,9x5,2x3,3x2,x,4
b. 6x15,7x9,5x6,3x3,4x2,x,9
Note: 4 can be written as 4x0 having the lowest degree and so is for 9