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Rationalizing a Denominator. Rationalizing Irrational and Complex Denominators.
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Rationalizing Irrational and Complex Denominators The denominator of a fraction can not contain an imaginary number or any other radical. To rationalize the denominator (rewriting a fraction so the bottom is a rational number) multiply by the conjugate of the denominator. Ex: Rationalize the denominator of each fraction. a. Correct form for a complex number b.