Simplify with no negative exponents: 1. x (8x -2 y -3 )/(4x 3 y -4 ) Write in radical form: 3. a 3/2

 Be able to determine the domain of an algebraic expression  Be able to simplify rational expressions  Be able to add, subtract, multiply and divide rational expressions  HW: Lesson 4

Factoring:  Is there a GCF?  How many terms?  Two terms: Diff of sq; Diff of cubes; Sum of cubes  Three terms: PST; two parentheses

 Rational expression- fraction with polynomials in numerator and denominator  Domain- When will the denominator equal 0? When will the denominator have a negative radicand? When will the numerator be undefined? (negative radicand)

1. FACTOR the numerator and denominator 2. Cancel out common factors between the numerator and denominator Ex.

1. 2/3 * 9/4 = 2. 1/5 3/10 = 3. 3/8 + 5/6 = 4. 3/8 – 5/6 =

1. FACTOR numerator and denominator 2. Multiply  cancel out common factors, then mult numerators and denominators 3. Divide  cancel out common factors, then mult numerators and denominators 4. Add & Subtract  get a common denominator; then add/sub numerators