Rational Expressions
By Sarah Durr
What is a rational expression?
Simplifying Rational Expressions
1. factor both the numerator and denominator
2. eliminate common factors
3. simplify
4. check to see under which conditions is the expression undefined
1. Factor
2. Eliminate
3. Simplify
4. Check for undefined
Multiplying & Dividing Rational Expressions
1. (if division) switch the numerator and denominator of one of the expressions (A.K.A. changing it to a multiplication expression)
2. write out the factors for EVERYTHING
3. eliminate all common factors
4. simplify expression
Want a short cut for multiplying and dividing rational expressions?
Simplifying Rational Expressions Before Multiplying & Dividing
1. (if division) switch the numerator and denominator of one of the expressions (A.K.A. changing it to a multiplication expression)
2. factor the polynomials
3. eliminate common factors
4. simplify
5. multiply
Summary of Topics in Today's Newsletter
2. Multiplying & Dividing Rational Expressions
3. Simplifying Rational Expressions Before Multiplying & Dividing (A.K.A. Making Polynomials in the Numerator and Denominator)
Mark Your Calendar!!
Test 2: Thursday, 12.10.2015