What's an Excluded Value?

What's an Excluded Value?

Note:

Excluded values are simply that: values that are excluded, or left out. These are values that will make the denominator of a rational expression equal to 0. Remember, you're not allowed to divide by 0, so these values are important to identify and exclude while solving. This tutorial shows you all about excluded values!

Keywords:

  • definition
  • excluded value
  • singularity
  • blow up
  • infinity
  • divide by zero
  • divide
  • zero
  • ratio

Background Tutorials

  • Fractions

      • What's a Numerator and What's A Denominator?What's a Numerator and What's A Denominator?

      What's a Numerator and What's A Denominator?

      Numerators and denominators are the key ingredients that make fractions, so if you want to work with fractions, you have to know what numerators and denominators are. Lucky for you, this tutorial will teach you some great tricks for remembering what numerators and denominators are all about.

  • Evaluating Expressions

      • What is a Variable?What is a Variable?

      What is a Variable?

      You can't do algebra without working with variables, but variables can be confusing. If you've ever wondered what variables are, then this tutorial is for you!

  • Solving Polynomial Equations

  • Simplifying Rational Expressions

      • How Do You Find Excluded Values?How Do You Find Excluded Values?

      How Do You Find Excluded Values?

      Excluded values are values that will make the denominator of a fraction equal to 0. You can't divide by 0, so it's very important to find these excluded values when you're solving a rational expression. Follow along with this tutorial and learn how to find these excluded values!

      • What's a Rational Expression?What's a Rational Expression?

      What's a Rational Expression?

      Got a fraction with a polynomial in the numerator and denominator? You have a rational expression! Learn about rational expressions in this tutorial.

Further Exploration

  • Dividing Integers

      • Why Can't You Divide By 0?Why Can't You Divide By 0?

      Why Can't You Divide By 0?

      Why can't you divide by 0? This may be one of the most asked math questions. Get this question answered once and for all by watching this tutorial!

  • Simplifying Rational Expressions

      • How Do You Find Excluded Values?How Do You Find Excluded Values?

      How Do You Find Excluded Values?

      Excluded values are values that will make the denominator of a fraction equal to 0. You can't divide by 0, so it's very important to find these excluded values when you're solving a rational expression. Follow along with this tutorial and learn how to find these excluded values!