Using Rational Expressions. A Rational Expression is the ratio of two polynomials:. Using Rational Expressions. Using Rational Expressions is very similar to Using Rational Numbers (you may like to read that first).. Adding Rational Expressions. The easiest way to add Rational Expressions is to use the common denominator method:

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Rational functions | Algebra 2 | Math | Khan Academy

Just as the polynomials are analogous to the integers, rational functions are analogous to the rational numbers. We will learn more about this analogy as we rewrite various rational expressions, and also think about their graphical behavior.

SOLVING RATIONAL EQUATIONS EXAMPLES 1. Recall that you can solve equations containing fractions by using the least common denominator of all the fractions in the equation. Multiplying each side of the equation by the common denominator eliminates the fractions. This method can also be used with rational equations. Rational equations are equations

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Adding & subtracting rational expressions: like ...

so let's add six over 2x squared minus seven to negative 3x minus eight over 2x squared minus seven and like always pause the video and try to work it out before I do well when you look at this we have these two rational expressions and we have the same denominator 2x squared minus 7 so you could say we have 6 2x squared minus 7 and then we have negative 3x minus 8 2x squared minus 7 is one ...

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