Rational Expressions |
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A Rational Expression is an algebraic fraction which has polynomials in both the numerator and denominator. |
Rational Expressions can be added and subtracted just like regular fractions.
Unlike Denominators |
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Fractions with different values in their denominators have unlike denominators. |
To make the denominators equal, we need to find their Least Common Multiple(LCM).
Figure 1. |
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First, we need to find the LCM of the two fractions above:
Figure 2. |
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Now we need to make both fractions have "2x" in their denominator, then we can subtract them:
Figure 3. |
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