# rational expressions   76 videos

• #### Multiplying and Distributing Radical Expressions

##### AlgebraRadical Expressions and Equations

How to multiply radical expressions.

distributing FOIL radicand
• #### Simplifying Expressions with Exponents

##### AlgebraExponents

How to simplify expressions with exponents.

exponent quotient product base
• #### Rational Exponents

##### Algebra 2Roots and Radicals

How to understand the correlation between radicals and fractional exponents.

rational exponents fractional exponents radical
• #### Adding and Subtracting Radical Expressions

##### AlgebraRadical Expressions and Equations

How to add and subtract radical expressions.

square root radical radicand like radicals
• #### Graphing Rational Functions, n=m

##### PrecalculusPolynomial and Rational Functions

How to recognize when a rational function has a horizontal asymptote, and how to find its equation.

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• #### Graphing Rational Functions, n less than m

##### PrecalculusPolynomial and Rational Functions

How to recognize when y = 0 is the horizontal asymptote of a rational function.

rational functions polynomials degree horizontal asymptote
• #### Limits of Rational Functions

##### PrecalculusPolynomial and Rational Functions

How to evaluate the limit of k/x^n as x goes to infinity (or negative infinity).

rational functions limits infinity
• #### Solving a Rational Equation

##### Algebra 2Rational Expressions and Functions

How to solve a simple rational equation.

cross multiplying fraction factoring denominator least common denominator lcd check
• #### Evaluating Rational Exponents

##### Algebra 2Roots and Radicals

How to evaluate a fractional exponent two ways.

evaluating rational exponents power over root
• #### Rational Exponents with Negative Coefficients

##### Algebra 2Roots and Radicals

How to know when a negative coefficient is associated with power.

evaluating rational exponents power over root negative
• #### Order of Operations

##### Pre-AlgebraIntegers

How to use the order of operations to simplify expressions.

simplify PEMDAS expression
• #### Order of Operations

##### AlgebraPre-Algebra

How to use the order of operations to simplify expressions.

simplify PEMDAS expression
• #### Solving Rational Equations with Like Denominators

##### AlgebraRational Expressions and Functions

How to solve rational equations by clearing the denominator.

clearing the denominator common denominator excluded value
• #### Solving Rational Equations with Unlike Denominators

##### AlgebraRational Expressions and Functions

How to solve rational equations with unlike denominators.

common denominator excluded value
• #### Graphs with Holes

##### PrecalculusPolynomial and Rational Functions

How to graph a rational function when there is a common factor in the numerator and denominator

rational functions factors holes
• #### Calculating Coordinates in the Unit Circle

##### GeometryPythagorean Theorem

How to describe the unit circle. How to draw the unit circle and label its parts. How to strategize about finding coordinates on the unit circle.

graphing a rational expression 1/x asymptotes
• #### Calculating Coordinates in the Unit Circle

##### TrigonometryPythagorean Theorem

How to describe the unit circle. How to draw the unit circle and label its parts. How to strategize about finding coordinates on the unit circle.

graphing a rational expression 1/x asymptotes
• #### Simplifying Radical Expressions

##### AlgebraRadical Expressions and Equations

How to simplify radicands.

square root radicand radical
• #### Limits at a Glance

##### PrecalculusPolynomial and Rational Functions

How to quickly find the limit of a rational function as x goes to infinity.

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• #### Finding the Domain of a Function

##### PrecalculusIntroduction to Functions

How to find the domain of a function when it has rational or radical expressions.

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