Add and Subtract Rational Expressions

Front

To add or subtract rational expressions we must have a _____________?

Back

common denominator

Front

The first thing that I need to add or subtract fractions is _____________?

Back

Have the same denominator

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Front

What is a rational expression?

Back

A fraction where the numerator and the denominator are polynomials.

Front

What is the first step in adding rational expressions?

Back

Find a common denominator.

Front

What does it mean to simplify a rational expression?

Back

To reduce it to its simplest form by canceling common factors.

Front

What is the formula for finding the least common denominator (LCD) of two fractions?

Back

The LCD is the least common multiple (LCM) of the denominators.

Front

How do you combine rational expressions with different denominators?

Back

Convert them to have a common denominator before adding or subtracting.