Appendix A.4 Rational Expression.

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Appendix A.4 Rational Expression

Domain of an Algebraic expression The set of real number for which an algebraic expression is defined is the domain of expression. Two algebraic expression are equivalent if they have the same domain.

The domain of the polynomial. Set of all real number The domain of radical expression Set of all real number for which p(x) greater than or equal to zero The domain of fractional expression Set of all real number which q(x) not equal to zero.

Simplifying Rational Expression

Operation with Rational Expressions

Operation with Rational Expressions

Complex Fraction Fractional expression with separate fractions in the numerator, denominator, or both are called complex fraction.

Simplifying a Complex Fraction