Warm Up Factor the following expressions completely: 14a2 + 7a y2 + 7y + 12 x4 – 81
Unit 5 - Day 1 Simplifying Rational Expressions Objective: SWBAT simplify a rational expression.
What is a rational number? Review What is a rational number? (Feel free to ask google) Examples:
A fraction in which the numerator and/or denominator are polynomials. Rational Expressions A fraction in which the numerator and/or denominator are polynomials. Examples: * * * Note: Denominators cannot be zero. * * *
How do we simplify a rational expression? Review How do we simplify a rational expression? Example:
Simplifying Rational Expressions Example: Factor the numerator and denominator: Divide by the common factor:
Excluded Values Since division by zero is undefined, we must exclude any values of x that cause the denominator to equal zero. In the last example: Therefore, the excluded values are:
Simplifying Rational Expressions Example: Factor the numerator and denominator: Divide by the common factor: Excluded Values:
Classwork: Factoring practice Packet pg. 2 - 3 Simplifying practice ~Odds only~ Homework: Finish pg. 2 - 6