Muskan is making a fruit salad. She starts with (m + n)/(m ^ 2 + mn + n ^ 2) cup of strawberry, (m - n)/(m ^ 2 - mn + n ^ 2) cup of blueberries, and (2n ^ 3)/(m ^ 4 + m ^ 2 * n ^ 2 + n ^ 4) cup of sliced bananas. If she combined all these fruits in abowl, how much fruit does she have in total ? Write in simplified form.
