If - 2mx ^ NY ^ 2 is a quintic monomial of X, y, and the coefficient is - 4, find the value of 3m-2n

If - 2mx ^ NY ^ 2 is a quintic monomial of X, y, and the coefficient is - 4, find the value of 3m-2n


If - 2mx ^ NY ^ 2 is a quintic monomial of X, y, and the coefficient is - 4
-2m=-4
m=2
n+2=5
n=3
3m-2n=6-6=0