Quadratic And Roots

Quadratics and Roots By Petrain King IMaST Lead Coach LAUSD Modified from a PowerPoint by Mark P of the same title http://subjectsearch.wikispaces.com/Math

Chapter 13-4 of Prentice Hall ,[object Object],[object Object],[object Object]

What are quadratic equations? ,[object Object],[object Object],[object Object],[object Object]

Roots Where are they in this example?

Roots Where are they in this example? X= Time

Roots Where are they in this example? X= Time Y= Height Root Root

What do quadratic equations look like? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What do quadratic equations look like? ,[object Object],[object Object]

Example One; Page 590 ,[object Object],5x 2 -8x+3=0 5x 2 -8x= -3 5x 2 -8x = 3 +3 +3 -3+3=0

5x 2 -8x+3=0 ,[object Object],[object Object],[object Object],5 -8 3 5x 2 -8x+3=0 A B C

5x 2 -8x+3=0 A B C ,[object Object],[object Object]

5x 2 -8x+3=0 a b c ,[object Object],[object Object],[object Object],[object Object]

5x 2 -8x+3=0 a b c ,[object Object],[object Object],[object Object],[object Object],Be careful Be very careful

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],The given 4 was multiplied with a and c The given 2 was multiplied with a

[object Object],[object Object],[object Object],[object Object],10 The difference between -60 and +64

[object Object],[object Object],[object Object],[object Object],10 What’s the square root of 4? 10 0.8 ± 0.2

0.8 ± 0.2 ,[object Object],0.8 - 0.2 = 0.60 The Solution ARE 1 and 3/5 6/10 = 3/5= 0.6

Quiz Time ,[object Object],[object Object]

Homework ,[object Object],[object Object]

Using Quadratic Equations. One example ,[object Object],[object Object],[object Object]

Solving Quadratic Equations. ,[object Object],[object Object]

How many solutions? ,[object Object],[object Object],[object Object],[object Object],[object Object]

Quadratic And Roots

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