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Algebra Rational Equations and Functions Excluded Values for Rational Expressions. Key Questions. How do you state the excluded values for rational expressions? The only rule with rational expression is that the denominator can't be zero, since you can't divide by zero.
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Find the excluded values by simplifying 4 x − 2 2 x 2 + x − 1. Both the numerator and denominator can be factored using methods learned in previous Concepts.
Learning Objectives: SWBAT. Determine whether the graph of an expression is continuous discontinuous given its equation. Determine the domain/excluded values of a rational expression.
Find the excluded values by simplifying \begin {align*}\frac {4x-2} {2x^2+x-1}\end {align*}. Both the numerator and denominator can be factored using methods learned in previous Concepts. \begin {align*}\frac {4x-2} {2x^2+x-1} \rightarrow \frac {2 (2x-1)} { (2x-1) (x+1)}\end {align*}
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.
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!
