1/x^2+2x+1 subtract 1/x^2-4x-5 and give your answer in the form of f(x)/g(x) your answer for the function f(x) is: ________ your answer for the function of g(x) is: _______
Follow Math Help Forum on Facebook and Google+
Originally Posted by B-lap \frac{1}{x^2+2x+1}-\frac{1}{x^2-4x-5} and give your answer in the form of f(x)/g(x) your answer for the function f(x) is: ________ your answer for the function of g(x) is: _______ Factor the denominators. (This makes it easier to find a common denominator.) $\displaystyle \frac{1}{(x+1)^2}-\frac{1}{(x+1)(x-5)}$ Make common denominators and subtract. $\displaystyle \frac{x-5}{(x+1)^2(x-5)}-\frac{x+1}{(x+1)^2(x-5)}=\boxed{\frac{-6}{(x+1)^2(x-5)}}$
Last edited by mr fantastic; Sep 21st 2009 at 02:58 PM.
View Tag Cloud