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