Rational Expressions
Flashcard
•
Mathematics
•
11th Grade - University
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a rational expression?
Back
A rational expression is a fraction where the numerator and the denominator are both polynomials.
2.
FLASHCARD QUESTION
Front
How do you multiply rational expressions?
Back
To multiply rational expressions, multiply the numerators together and the denominators together, then simplify if possible.
3.
FLASHCARD QUESTION
Front
What is the process for adding rational expressions with different denominators?
Back
Find a common denominator, rewrite each expression, then add the numerators and simplify.
4.
FLASHCARD QUESTION
Front
What does it mean for a rational expression to be undefined?
Back
A rational expression is undefined when its denominator equals zero.
5.
FLASHCARD QUESTION
Front
How do you find the values that make a rational expression undefined?
Back
Set the denominator equal to zero and solve for the variable.
6.
FLASHCARD QUESTION
Front
What is the first step in simplifying a rational expression?
Back
Factor both the numerator and the denominator.
7.
FLASHCARD QUESTION
Front
What is the difference between a proper and improper rational expression?
Back
A proper rational expression has a degree of the numerator less than the degree of the denominator; an improper one has a degree of the numerator greater than or equal to the degree of the denominator.
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