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April 8th, 2015, 08:47 AM   #1
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Rational Expression

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

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April 8th, 2015, 09:03 AM   #2
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$\displaystyle \frac{1}{1-2x} - \frac{1}{2-x}$

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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