Put a  under the  in the top and
under the  on the bottom so everything
will be a fraction:



Enclose every fraction within parentheses:



Since the LCD for all four fractions top and bottom
is , multiply top and bottom by 
written as 



Cancel the 's in two places:



Ignoring all the  denominators, all we have
left is



Use FOIL to change  to  
to  to 
and multiply out the bottom:








Factor the numerator and denominator:



Cancel the 's



All that's left is



Edwin