# rational expressions

• Jul 26th 2013, 11:18 PM
Mathnood768
rational expressions
http://puu.sh/3MOkl.jpg
i did 15b wrong... can someone show me how to do it correctly thanks
• Jul 26th 2013, 11:30 PM
earboth
Re: rational expressions
Hello,

you didn't factor correctly the denominator of the 2nd fraction. The 2nd line should read:

$\frac{x+1}{x+6}-\frac{(x-2)(x+2)}{\color{red}x(x+2)\color{black}} \cdot \frac{x(2x+1)}{(2x+1)(x+3)}$