1. P.4: Fractional Expressions Unit P: Prerequisites for Algebra 5-Trig

2. Vocabulary Domain: Set of real numbers for which the algebraic expression is defined. Two expressions are equivalent if they have the same domain and yield the same values for all numbers in their domain.

3. Finding the Domain A polynomial: all real numbers Radical expression: make sure that the radicand is nonnegative. Rational expression: make sure that the denominator is not equal to zero.

4. Simplifying Rational Expressions Factor the numerator and the denominator. Divide out common factors.

5. Operations with Rational Expressions Multiplying Factor and multiply straight across. Divide out common factors Dividing Factor, flip the second fraction and multiply straight across. Divide out common factors.

6. Operations with Rational Expressions Adding/Subtracting Factor the denominator Find the LCD Add/Subtract Factor numerator Divide out common factors.

7. Compound Fractions

8. Simplifying Compound Fractions