Question

arrange the given polynomial in order of decreasing degree in X

Answer 1

In the decreasing order of degree of x:

$3 {x}^{2} {y}^{2} - 8x {y}^{3} + {x}^{4} - {y}^{4} + 2 {x}^{3} y \\ \\ = {x}^{4} + 2 {x}^{3} y + 3 {x}^{2} {y}^{2} - 8x {y}^{3} - {y}^{4}$