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7.3 Binomial Radical Expressions. Review Example.

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Presentation on theme: "7.3 Binomial Radical Expressions. Review Example."— Presentation transcript:

1 7.3 Binomial Radical Expressions

2 Review Example

3 RADICAL EXPRESSIONS EX-adding RULES –Have to have same number on inside –Have to have same nth root

4 RADICAL EXPRESSIONS EX-adding

5 Let’s try some...

6 Solutions

7 Review - RATIONALIZING a DENOMINATOR How to rationalize using conjugates –If there is a radical in the bottom, then you must rationalize it.

8 How to rationalize when there are rationals in the denominator… Multiply by the same root but make it so you can take root of the powers

9 Let’s remember conjugates Sample: Find the conjugate of Multiply the binomial by the conjugate using the box method. 2 4 16(3)= -48 Notice: No roots appear in our solution when we multiply by a conjugate

10 RADICAL EXPRESSIONS EX-FOIL Method +-- Fully simplified since radicals can’t break down and our addition rules don’t apply

11 EX-rationalizing CONJUGATE


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