Adding and Subtracting Rational Expressions

Front

What is a rational expression?

Back

A rational expression is a fraction where both the numerator and the denominator are polynomials.

Front

How do you add or subtract rational expressions with the same denominator?

Back

To add or subtract rational expressions with the same denominator, combine the numerators and keep the denominator the same.

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.

Front

How do you find a common denominator for two rational expressions?

Back

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

Front

What is the formula for subtracting two rational expressions?

Back

Front

Back

Front

Back

Front

What is the process for simplifying a rational expression?

Back

Factor the numerator and denominator, cancel common factors, and simplify.

Front

What does it mean to simplify a rational expression?

Back

To simplify a rational expression means to reduce it to its lowest terms.

Front

Back