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Rational Expressions

PurpleMath is a good place to go when you don't want to watch a video.

Take a look at the Rational Expressions section of the site.

  A rational expression is any expression or function which includes a polynomial in its numerator and denominator. In other words, a rational expression is one which contains fractions of polynomials.

Adding and subtracting rational expressions from the Khan Academy

NOTE: All Khan Academy content is available for free at

Need additional help & practice problems?  Try Virtual Math Lab.





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