What is a rational expression? Is it the same thing as a radical expression?
The answer is, no.
A rational expression is the quotient (fraction) of two polynomials with the denominator not equal to 0.
The domain of a rational expression is the set of real numbers that can be used in the place of the variable. You can remember domain as a number that the bottom variable cannot equal to, or a number that will make the bottom 0.
Undefined Values (domain)
Reducing to Lowest Terms
Here are some videos that will definitely help you with your homework questions from your workbook!
1. Simplifying rational expressions
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