11 videos in "Adding / Subtracting Rational Expressions"

Rational Expressions 5  Adding with Common Denominator

Rational Expressions 6  Subtracting with Common Denominator

Rational Expressions 7

Rational Expressions 8

Adding rational expressions with different denominators 1

Adding rational expressions with different denominators 2

Adding rational expressions with different denominators 3

Adding rational expressions with different denominators 4

Adding rational expressions with different denominators 5

Adding rational expressions with different denominators 6

Adding Rational Expressions
Rational Expressions 8
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In the final problem, the secondtolast simplifying step should read
(4x  6)/(2(2x^2 + 5x  12)).
(4x  6)/(2(2x^2 + 5x  12)).
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 subtract and simplify (5x^3  13)/(x^2  3x + 2)  (10x^2  13)/(x^2  3x + 2)?
 How do you factor so you can you simplify or cancel terms in (5x^3  10x^2)/(x^2  3x + 2)?
 How do you add and simplify (15x^2  4x)/(9x^2  4) + 14x/(9x^2  4)?
 How do you factor so you can you simplify or cancel terms in (15x^2 + 10x)/(9x^2  4)?
 How do you subtract and simplify (7x  12)/(4x^2 + 10x  24)  (3x  6)/(4x^2 + 10x  24)?
 How do you factor so you can you simplify or cancel terms in (4x  6)/(4x^2 + 10x  24)?
The problems in this lesson are more practice doing the same thing as the previous recent lessons have done. Some terms have higher powers than 2, however. Many good problems are shown step by step and explained in their entirety. Great practice lesson.