Multiply and Divide Rational Expressions Day 3

Front

What is a rational expression?

Back

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

Front

How do you multiply rational expressions?

Back

To multiply rational expressions, multiply the numerators together and the denominators together, then simplify if possible.

Front

What is the first step in dividing rational expressions?

Back

The first step is to multiply by the reciprocal of the divisor.

Front

What does it mean to simplify a rational expression?

Back

Simplifying a rational expression means reducing it to its lowest terms by canceling common factors in the numerator and denominator.

Front

What is the formula for multiplying two fractions?

Back

Front

What is the reciprocal of a fraction?

Back

Front

How do you find the least common denominator (LCD) of two rational expressions?

Back

The LCD is the least common multiple of the denominators of the rational expressions.

Front

What is the importance of factoring in rational expressions?

Back

Factoring helps to simplify rational expressions and identify common factors that can be canceled.

Front

Back

Front

What are the restrictions on the variable in a rational expression?

Back

The variable cannot take values that make the denominator equal to zero.