What is the difference of the polynomials? M^2 n^2-7

The difference is m^2n^2 - mn - 11 ...

Step-by-step explanation:

We have to find the difference of the terms:

(m^2n^2-7) - (mn+4)

First of all we have to remove the parenthesis of both the expressions:

The signs of second expression will become opposite when we remove parenthesis because it has negative sign outside the parenthesis.

m^2n^2-7 - mn-4

Now we will combine the like terms:

m^2n^2 - mn - 7 - 4

m^2n^2 - mn - 11

Thus the difference is m^2n^2 - mn - 11 ...