Factoring trinomials

13.3: Factoring trinomials
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This lesson contains 15 slides, with interactive quizzes and text slides.

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13.3: Factoring trinomials
You need your Ipad and notebook

Slide 1 - Slide

Today
  • Start (5 min)
  • Recap (15 min)
  • Bettermarks (20 min)
  • Practice togheter (15 min)
  • Bettermarks (20 min)
  • End lesson (5 min)

Slide 2 - Slide

Factorizing trinomials
x2+8x+12

Slide 3 - Slide

Factor
x2+9x+20
timer
1:00
A
(x+9)(x+20)
B
(x+10)(x+2)
C
(x+3)(x+3)
D
(x+4)(x+5)

Slide 4 - Quiz

Factor
x2+10x+16
timer
1:00
A
(x+2)(x+5)
B
(x+8)(x+2)
C
(x+4)(x+4)
D
(x+1)(x+10)

Slide 5 - Quiz

Factor
x2+x6
timer
1:00
A
(x2)(x3)
B
(x+2)(x3)
C
(x2)(x+3)
D
(x+2)(x+3)

Slide 6 - Quiz

Factor
x26x+9
timer
1:00
A
(x+3)(x+3)
B
(x3)(x3)
C
(x9)(x1)
D
(x+6)(x3)

Slide 7 - Quiz

Factor
x2+15x+50
timer
2:00

Slide 8 - Open question

Solving trinomials:
x2+9x+20=0

Slide 9 - Slide

Solving trinomials:
x2+9x+20=0
(x+4)(x+5)=0

Slide 10 - Slide

Solving trinomials:


        or                                                                                        
                                                                            
x2+9x+20=0
(x+4)(x+5)=0
x+4=0
x+5=0

Slide 11 - Slide

Solving trinomials:


        or                                                                                        
or                                                                                      
x2+9x+20=0
(x+4)(x+5)=0
x+4=0
x+5=0
x=4
x=5

Slide 12 - Slide

13.3 Factoring trinomials
Solving a trinomial using the product-sum method:
Example, solve:
Step 1: Factorize
Step 2: Make equations                                                     or
Step 3: Solve the equations                                       or
                                                                                          
x2+9x+20=0
(x+4)(x+5)=0
x+4=0
x+5=0
x=4
x=5
timer
4:00

Slide 13 - Slide

Slide 14 - Slide

Bettermarks
  • Work on 13.3
  • Raise your finger if you have any questions or when you're finished
  • Communicate in English please
timer
20:00

Slide 15 - Slide