If the third power of polynomial (m-n) x - the second power of X + x-n is a binomial expression about X, find the opposite number of the difference between M and n | Math enthusiast | Mathematical art

If the third power of polynomial (m-n) x - the second power of X + x-n is a binomial expression about X, find the opposite number of the difference between M and n

Because it is a binomial expression, it cannot have the third power of (m-n) X
Then M - n = 0
The opposite number of the difference between M and N is 0

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