Adding and Subtracting Rational Expressions

Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a rational expression?
Back
A rational expression is a fraction where both the numerator and the denominator are polynomials.
2.
FLASHCARD QUESTION
Front
How do you add rational expressions with the same denominator?
Back
To add rational expressions with the same denominator, combine the numerators and keep the denominator the same.
3.
FLASHCARD QUESTION
Front
How do you subtract rational expressions with the same denominator?
Back
To subtract rational expressions with the same denominator, subtract the numerators and keep the denominator the same.
4.
FLASHCARD QUESTION
Front
What is the first step in adding or subtracting rational expressions with different denominators?
Back
The first step is to find a common denominator.
5.
FLASHCARD QUESTION
Front
What is a common denominator?
Back
A common denominator is a shared multiple of the denominators of two or more fractions.
6.
FLASHCARD QUESTION
Front
How do you simplify a rational expression?
Back
To simplify a rational expression, factor both the numerator and the denominator and then cancel any common factors.
7.
FLASHCARD QUESTION
Front
What does it mean to factor a polynomial?
Back
Factoring a polynomial means rewriting it as a product of its factors.
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