Rational Expressions 7

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
6022 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Description:

More practice adding and subtracting rational expressions that already have a common denominator, and how to simplify if it is possible to cancel.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • 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)?
  • Staff Review

    • Currently 4.0/5 Stars.
    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.