The expression you provided is:
d^2/d+e - e^2/d+e
To perform the indicated operations, we need to find a common denominator and simplify the expression. We can find a common denominator by multiplying the two denominators d+e and d+e together.
d^2(d+e)/(d+e)(d+e) - e^2(d+e)/(d+e)(d+e)
Simplifying this expression gives:
(d^3 + de^2 - e^3)/(d+e)^2
Therefore, the simplified expression for the given operation with the assumption that no denominator equals zero is (d^3 + de^2 - e^3)/(d+e)^2.