Rational Expressions 4 - Dividing

Sick of ads?‚Äč Sign up for MathVids Premium
Taught by YourMathGal
  • Currently 4.0/5 Stars.
5789 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Description:

Examples of dividing rational expressions by first multiplying by the reciprocal, and then factoring the numerators and denominators in order to cancel factors to reduce the rational expression to a simplified form.

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

Questions answered by this video:
  • How do you divide and simplify rational expressions?
  • How do you divide fractions?
  • What is a/b divided by c/d?
  • How do you divide ((12x^3y)/7)/((9x^2)/14y^3)?
  • How do you factor, divide, and simplify complex rational expressions such as ((2x^2 - 3x - 20)/(2x^2 - 7x - 30))/((2x^2 - 5x - 12)/(4x^2 + 12x + 9))?
  • How do you factor, divide, and simplify ((x - 3)/(2 - x))/((x^2 + 3x - 18)/(x^2 + 2x - 8))?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson picks up from the last one, but instead of multiplying complex rational expressions, we are now dividing them. It turns out that this is very similar to just multiplying rational expressions. Several good examples are shown step by step.