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3/8- Section 6.2

3/8- Section 6.2

Assessment

Presentation

Mathematics

9th Grade

Medium

Created by

Eduardo Catalan-Olivares

Used 4+ times

FREE Resource

7 Slides • 5 Questions

1

Radicals and Exponents

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2

Previously: Finding roots of a number

  •  25=5, 5\sqrt{25}=5,\ -5  

  • Why? 

  •  55=255\cdot5=25  , or  52=255^2=25  

  •  55=25-5\cdot-5=25  , or  (5)2=25\left(-5\right)^2=25 

3

Finding roots of a number

  •  813=2, 8^{\frac{1}{3}}=2,\  

  • Why?

  •  222=82\cdot2\cdot2=8  , or  23=82^3=8  

4

Finding roots of a number

  •  12513=5, -125^{\frac{1}{3}}=-5,\  

  • Why?

  •  555=125-5\cdot-5\cdot-5=-125 , or  (5)3=125\left(-5\right)^3=-125  

5

Multiple Choice

What is the cube root of 1000?

 1000131000^{\frac{1}{3}}  =

1

10

2

100

3

1

4

3000

6

Fill in the Blanks

Type answer...

7

Multiple Choice

What is the seventh root of 128?

 12817128^{\frac{1}{7}}  =

1

2

2

-2

3

128/7

4

3

5

4

8

Fill in the Blanks

Type answer...

9

Think about it!

What do you think is the square root of -16? You will give an answer on the next slide!

 16=?\sqrt{-16}=?  

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10

Open Ended

What is the square root of -16?

 16=?\sqrt{-16}=?  

11

 16=?\sqrt{-16}=?  

Note:

 44=164\cdot4=16  
and
 44=16-4\cdot-4=16  

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12

In a future course...

COMPLEX NUMBERS!

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Radicals and Exponents

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