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)?
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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.