This
** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*
**Unformatted text preview: **Lesson 6 Rational expression: - a fraction with polynomials in the numerator and denominator (a quotient or ratio of polynomials) ¡¢£¤¡¥¦§¢ ¡¢£¤¡¥¦§¢ Domain: - set of numbers for which an expression is defined - because rational expressions are fractions, we must exclude numbers from a rational expression’s domain that make the polynomial in the denominator equal to zero Simplifying rational expressions: 1. factor all the polynomials (if possible) 2. cancel common factors (if possible) A rational expression is simplified if its numerator and denominator have no common factors other ¨ or ©¨ Be sure to keep in mind that only common factors are cancelled ( NOT TERMS) . Multiplying rational expressions: 1. simplify, if possible 2. multiply numerator times numerator and denominator times denominator 3. again, simplify if possible Dividing rational expressions: 1. simplify, if possible 2. take the reciprocal of the divisor and change division to multiplication 3. multiply numerator times numerator and denominator times...

View
Full
Document