ash1017 said:

The problem I am working on is a(squared) divided by (a-b) plus b(squared) divided by (b-a).

I will guess that you mean the following:

. . . . .[(a[sup:2oxwyks8]2[/sup:2oxwyks8])/(a - b)] + [(b[sup:2oxwyks8]2[/sup:2oxwyks8])/(b - a)]

I will guess that the instructions were something along the lines of "simplify the expression". But I'm afraid I don't understand what you did...? (It helps to

*show* your work, rather than just mention that you did it. Until we can see what you did, it is difficult, if not impossible, to locate the errors, if any.)

A good first step would be to flip the subtraction in the second fraction's denominator to get:

. . . . .[(a[sup:2oxwyks8]2[/sup:2oxwyks8])/(a - b)] - [(b[sup:2oxwyks8]2[/sup:2oxwyks8])/(a - b)]

Since the fractions have a common denominator, add them. Factor the numerator, and cancel the common factor. (I don't know what answer you got, nor what the book is telling you, so I cannot comment on that. Sorry.)

Please reply with your work and reasoning so far. Thank you!

Eliz.