1. Fractional Expressions
Sec. P.5
Fractional Expressions

2. Domain
Set of real numbers for which an algebraic expression is defined

3. Equivalent
Expressions that have the same domain and yeild the same values for all numbers in their domain
Ex. (x + 1) + (x + 2) = 2x + 3

4. Finding the domain You must decide if there is anything it cannot be.
What can x not equal
Look for radicals and fractions

5. Fractional expression
Quotient of 2 algebraic expressions

6. Rational Expressions
Quotient of 2 polynomials

7. In order to simplify rational expressions you must factor

8. Factoring completely and changing the sign of a factor may allow more reducing

9. When mutliplying with a rational expression simplify first

10. Division
Same as multiplication just remember to change to multiplication and use the reciprocal of the second fraction

11. HW. P. 48
1-8, odd, odd, 61