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scsims April 8th, 2015 07:47 AM

Rational Expression
 
C is the correct answer, but I can't work it out to get it. Can anyone help?

http://images.tapatalk-cdn.com/15/04...8c65225d14.jpg

skeeter April 8th, 2015 08:03 AM

$\displaystyle \frac{1}{1-2x} - \frac{1}{2-x}$

common denominator is $(1-2x)(2-x)$ ...

$\displaystyle \frac{1(2-x)}{(1-2x)(2-x)} - \frac{1(1-2x)}{(2-x)(1-2x)}$

finish it


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