If the m-th power of the square of the monomial formula 3x multiplied by Y is the same as the 3-th power of the n-th power of 1 / 3 multiplied by X multiplied by Y, then M-N =?

If the m-th power of the square of the monomial formula 3x multiplied by Y is the same as the 3-th power of the n-th power of 1 / 3 multiplied by X multiplied by Y, then M-N =?

Because the square of 3x is the same as the power of 1 / 3 times x, so n = 2
Because the m power of Y is the same as the 3 power of Y, so m is equal to 3
So M-N = 3-2 = 1