Unit 2 FM3 Day 1 Notes­­Simplified Rad Form, Sqr Rt Method, Factoring completed.notebook September 14, 2015

Complex Numbers, Simplifying Radicals and Solving Quadratics

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Unit 2 FM3 Day 1 Notes­­Simplified Rad Form, Sqr Rt Method, Factoring completed.notebook September 14, 2015

Breaking Down Radicals *Make a factor tree of the "radicand" (number inside the radical symbol) *circle PAIRS of matching numbers *for each pair, write the number represented by the pair on the outside of the radical symbol. *all numbers taken out, mult. together *all numbers left inside, mult. together

Ex. Write in simplified radical form. A.

B.

C.

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Unit 2 FM3 Day 1 Notes­­Simplified Rad Form, Sqr Rt Method, Factoring completed.notebook September 14, 2015

Solving Quadratics: f(x) = ax2  + bx + c  Methods:    1.  Square Root Method  2.  Factoring  3.  Quadratic Formula  4.  Completing the Square (tomorrow)

            

 

quadratics have solutions ­­ they are the x­intercepts two solutions        

one solution      

no real solution

solutions can also be called   x­intercepts                                                zeros                                                roots

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Unit 2 FM3 Day 1 Notes­­Simplified Rad Form, Sqr Rt Method, Factoring completed.notebook September 14, 2015 1. Square Root Method ⇒  isolate the x2 ⇒  take the square root of both sides; don't forget +/­  =>  break down the value inside square root if necessary Examples: 1)  x2 = 25

2)  x2 = 81

3)  x2 = 96

4)  x2 = ­12

5)  12x2 ­ 60 = 0

                                 6)  3x2 ­ 48 = 0

2.  Solve by Factoring

Steps:  1.  Set = 0    

2.  Factor

   

3.  Set each factor with a variable = 0 using the Zero   Product Property

   

4.  Solve for each solution

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Unit 2 FM3 Day 1 Notes­­Simplified Rad Form, Sqr Rt Method, Factoring completed.notebook September 14, 2015 a.  x2 + 6x + 9 = 0

b.  x2 + 2x = 35

c.  z2 = 9

d.  2x2 ­ 6x = 36

e.  4x2 ­ 28x + 49 = 0

f.  5x2 + 4x ­ 3 = 0

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Simplified Rad Form, Sqr Rt Method, Factoring completed.pdf

Unit 2 FM3 Day 1 Notes--Simplified Rad Form, Sqr Rt Method, Factoring completed.pdf. Unit 2 FM3 Day 1 Notes--Simplified Rad Form, Sqr Rt Method, Factoring ...

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