Rational Expressions 7

Rational Expressions 7
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Part of video series Rational Expressions
Taught by YourMathGal
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Meets these NCTM Standards:


More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
More practice adding and subtracting rational expressions that already have a common denominator, and how to simplify if it is possible to cancel.
  • How do you add an subtract rational expressions with common denominators?
  • How do you add and simplify (9x - 14)/(x^2 + 10x + 21) + (x^2 - 4x)/(x^2 + 10x + 21)?
  • How do you factor so you can you simplify or cancel terms in (x^2 + 5x - 14)/(x^2 + 10x + 21)?
  • How do you subtract and simplify (x^2 + 8x)/(x^2 + 10x + 21) - (3x + 14)/(x^2 + 10x + 21)?
  • How do you subtract and simplify (x^2 + 3x - 25)/(x^2 - x - 20) - 3x/(x^2 - x - 20)?
  • How do you factor so you can you simplify or cancel terms in (x^2 - 25)/(x^2 - x - 20)?
This lesson goes through some more complicated examples of adding and subtracting rational expressions with common denominators and then simplifying the result. All steps for each video are explained and shown clearly in the video. This is good practice for learning to add and subtract polynomials, factor, and simplify rational expressions.
  • Currently 4.0/5 Stars.
Reviewed by MathVids Staff on May 01, 2010.
 
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