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module 1 lesson 28: a focus on square roots

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Module 1 Lesson 28: A Focus on Square Roots Warm Up: Simplify. Discussion Jason solves the following problem and says that the answer is x=4. Why is this not true? Extraneous solutions happen when we solve problems involving radicals because you cannot take the square root of a negative number. Any time we remove a radical with an even index, we should always check for an extraneous solution!

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Page 1: Module 1 Lesson 28: A Focus on Square Roots

Module 1 Lesson 28: A Focus on Square Roots

Warm Up: Simplify.

Discussion

Jason solves the following problem and

says that the answer is x=4. Why is this

not true?

Extraneous solutions happen

when we solve problems

involving radicals because you

cannot take the square root of

a negative number. Any time

we remove a radical with an

even index, we should always

check for an extraneous

solution!

Page 2: Module 1 Lesson 28: A Focus on Square Roots
Page 3: Module 1 Lesson 28: A Focus on Square Roots
Page 4: Module 1 Lesson 28: A Focus on Square Roots

Rationalizing the Denominator

Page 5: Module 1 Lesson 28: A Focus on Square Roots
Page 6: Module 1 Lesson 28: A Focus on Square Roots

Assignment

In your Eureka Module, please do Module 1, Lesson 28, Problem Set

Numbers 1-20.


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