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 Radical expressions that contain the sum and difference of the same two terms are called conjugates.

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Presentation on theme: " Radical expressions that contain the sum and difference of the same two terms are called conjugates."— Presentation transcript:

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2  Radical expressions that contain the sum and difference of the same two terms are called conjugates.

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4  Conjugates are used to rationalize denominators, because the product of conjugates do not contain any radicals.

5 FOILing Simplifying Notice how multiplying conjugates gets rid of the radicals.

6  If you are given a rational number where the denominator contains a radical, simply multiply the numerator and denominator by the conjugate of the denominator in order to rationalize the denominator.

7 Rationalize the denominator of the expression:

8 By definition

9 Simplifying, Solution


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