Homework Help: algebra

Posted by Sandra on Monday, July 13, 2009 at 8:32pm.

Reduce each rational expression to lowest terms. Assume that the
variables represent only numbers for which the denominators are
nonzero.

a^2-b^2/a-b

algebra - Marth, Monday, July 13, 2009 at 10:05pm
I assume you mean (a^2-b^2)/(a-b)

a^2 - b^2 factors to (a-b)(a+b) by the difference of two squares.

You now have (a-b)(a+b)/(a-b). The (a-b) cancel out, leaving you with (a+b)

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