If the n-th power of - 2mx is multiplied by the quadratic power of Y, which is the quintic monomial of X and y, we can find the value of M and n Why n + 2 = 5?

If the n-th power of - 2mx is multiplied by the quadratic power of Y, which is the quintic monomial of X and y, we can find the value of M and n Why n + 2 = 5?

m≠0
n+2=5
∴m≠0,n=3
Because the exponent of a monomial is the sum of the exponents of the letters