# LCD Method 1 Part 1 - Rational Expressions

Taught by YourMathGal
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Meets NCTM Standards:
Lesson Description:

Shows a method for finding the Least Common Denominator of Algebraic Fractions.

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

• How do you find the least common denominator of algebraic fractions or rational expressions?
• What is an LCD and how do you find one in Algebra?
• What is a least common multiple and what does it have to do with least common denominators?
• What is the least common denominator for 4/9x and 5/12x^2?
• How do you find the LCD of 3x/4y and 5x^2/6y^3?
• How do you find the least common denominator for 7/10x and 5/(4x + 10)?
• How do you find the least common denominator of fractions if the denominator has a binomial expression?
• What is the LCD of (3x - 1)/(x + 4) and 5x/(x - 6)?
• How do you find the LCD of 2x/(x^2 - 9) and 5/(4x + 12)?
• What is the least common denominator of (8x - 3)/(x^2 - 4x + 4) and 4/(3x - 6)?
• #### Staff Review

• Currently 4.0/5 Stars.
This lesson goes through some great examples of finding the least common denominators of rational expressions by determining what factors the fractions do and do not have in common and building up a common denominator. All steps are shown and explained very well.