It is known that MX ^ N Y is a cubic monomial about XY, and its coefficient is 4. Find the value of m ^ n

It is known that MX ^ N Y is a cubic monomial about XY, and its coefficient is 4. Find the value of m ^ n

The coefficient is m
So m = 4
The number is the sum of the numbers of X and y
So n + 1 = 3
n=2
So m ^ n = 4 & sup2; = 16