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S3H 4.14.2 lesson a3.notebook
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Lesson 4.1/4.2 ~ Radical Expressions
Objectives:
• I can find real roots.• I can simplify radical expressions.• I can use radical expressions in real world situations.• I can multiply and divide radical expressions.• I can rationalize the denominator of a radical expression.
S3H 4.14.2 lesson a3.notebook
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Think about it....
So what can we say about even roots vs odd roots?
*
S3H 4.14.2 lesson a3.notebook
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For our last problems, we had to write the radical in it wasn't given to us already written in the problem. Now we have problems where the radical is already on the number. How does that change our answers?
*
S3H 4.14.2 lesson a3.notebook
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c
=
For both numbers and variable!
Evenevenodd Rule:
If there's an even index on the radical & an even power on a variable inside the radical in the original problem
& the answer has the same variable outside the radical that has an odd power,
then you must put absolute value signs around that variable in the answer.
S3H 4.14.2 lesson a3.notebook
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If we are solving an equation, what should our answers look like?*
S3H 4.14.2 lesson a3.notebook
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How could we rewrite problems like these with just one power or one root?