# rationalizing the denominator   47 videos

• #### 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.

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• #### 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).

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• #### Multiplying and Dividing Rationals

##### AlgebraRational Expressions and Functions

How to multiply and divide rational expressions.

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• #### Graphing a Rational Expression

##### Algebra 2Rational Expressions and Functions

How to graph a basic rational equation.

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• #### Adding/Subtracting Fractions- Like Denominators

##### Pre-AlgebraFractions and MIxed Numbers

Adding and subtracting fractions that have the same denominator, including a visual representation

• #### Adding/Subtracting Fractions- Unlike Denominators

##### Pre-AlgebraFractions and MIxed Numbers

Drawing pictures and procedures for adding or subtracting fractions with unlike denominators

• #### Evaluating Rational Exponents

How to evaluate a fractional exponent two ways.

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• #### Rational Exponents with Negative Coefficients

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

evaluating rational exponents power over root negative
• #### Dividing Complex Numbers

How to rationalize the denominator when dealing with an imaginary number.

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• #### 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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• #### Applied Linear Equations: Collection Problem

##### Algebra 2Linear Equations

How to solve a word problem about how many dimes and quarters it takes to make a certain denomination.

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• #### Applied Linear Equations: Collection Problem

##### PrecalculusLinear Equations and Inequalities

How to solve a word problem about how many dimes and quarters it takes to make a certain denomination.

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How to solve rational equations.

• #### 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
• #### 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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• #### Multiplying Radicals of Different Roots

How to multiply radicals together when they are different roots.

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• #### Introduction to Real Numbers

##### Algebra 2Real Numbers

How to classify different types of real numbers.

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• #### Evaluating Limits Algebraically, Part 1

##### CalculusLimits and Continuity

How to evaluate the limit of a function using continuity.

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