Pre-Calculus Sec 1.4 Rational Expressions

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# Pre-Calculus Sec 1.4 Rational Expressions - PowerPoint PPT Presentation

Pre-Calculus Sec 1.4 Rational Expressions. Objectives: To review domain To simplify rational expressions. Vocabulary. A quotient of two algebraic expressions is a fractional expression.

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### Pre-CalculusSec 1.4 Rational Expressions

Objectives:

To review domain

To simplify rational expressions

Vocabulary

A quotient of two algebraic expressions is a fractional expression.

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

Domain

The domain of an algebraic expression is the set of real numbers that the variable is permitted to have.

Some basic expressions and their domains.

Class Work

Find the domain of each expression.

1. 2.

Multiplying Rational Expressions

To multiply rational expressions, we use this property of fractions:

Dividing Rational Expressions

To divide rational expressions, we use this property of fractions:

Class Work

Multiply or divide and simplify.

3) 4)

5)