Presentation is loading. Please wait.

Presentation is loading. Please wait.

Pre-Calculus Sec 1.4 Rational Expressions Objectives: To review domain To simplify rational expressions.

Similar presentations


Presentation on theme: "Pre-Calculus Sec 1.4 Rational Expressions Objectives: To review domain To simplify rational expressions."— Presentation transcript:

1 Pre-Calculus Sec 1.4 Rational Expressions Objectives: To review domain To simplify rational expressions

2 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.

3 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.

4 Ex 1. Find the domain of each expression. a) b) c)

5 Class Work Find the domain of each expression. 1.2.

6 Simplifying Rational Expressions Ex 2. Simplify. a) b)

7 To multiply rational expressions, we use this property of fractions: Multiplying Rational Expressions

8 Ex 3. Perform the indicated operation and simplfy.

9 Dividing Rational Expressions To divide rational expressions, we use this property of fractions:

10 Ex 4. Perform the indicated operation and simplify.

11 Class Work Multiply or divide and simplify. 3) 4) 5)

12 Adding & Subtracting Rational Expressions To add or subtract rational expressions, we first find a common denominator and then use this property of fractions:

13 Ex 4. Perform the indicated operation & simplfy. a) b)

14 Class Work 6) 7)

15 Compound Fractions A compound fraction is a fraction in which the numerator, the denominator, or both, are themselves fractional expressions.

16 Ex 5. Simplify

17 Common Errors to Avoid

18 Hw #4 p41 1,4,5,7,10,11,15 22,25,27,34,39,42,45,49,51


Download ppt "Pre-Calculus Sec 1.4 Rational Expressions Objectives: To review domain To simplify rational expressions."

Similar presentations


Ads by Google