# 2TH §11.4 AxB=0 (part 2)

What will we do today...
• §11.4 part 2
• Discuss S33 from the homework
• Together: exercise 32
• Homework: 33, 34 and C7
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Slide 1: Slide
WiskundeMiddelbare schoolvwoLeerjaar 2

This lesson contains 18 slides, with interactive quiz and text slides.

Lesson duration is: 50 min

## Items in this lesson

What will we do today...
• §11.4 part 2
• Discuss S33 from the homework
• Together: exercise 32
• Homework: 33, 34 and C7

S33

S33

#### Slide 4 -Slide

What's the connection between.........

1st:       Solving quadratic equations, and
2nd:     Graphs of quadratic formulas (parabolas)

By doing 32 together, you will learn to do the 2nd half of the paragraph.

#### Slide 5 -Slide

TASK 2:

+ Think about it for a while.

timer
0:20

#### Slide 6 -Slide

Solution TASK 2:

#### Slide 7 -Slide

TASK 3:
a. Think about this for yourself.
b. Compare your answer with your neigbors.

timer
1:00

#### Slide 8 -Slide

TASK 3:

Solution:

In the next slide, this equation will be solved.

#### Slide 9 -Slide

TASK 4:
1. Copy the equation in your Notebook and
2. Factorise it.

If you forgot how to Factorise a Trinomial,
look it up on p.179: Method!
timer
1:00

TASK 4:

SOLUTION:

#### Slide 11 -Slide

TASK 5:
Make this task in your Notebook.
To refresh your memory:
at 32a we saw that the graph intersects the x-axis at x = -1 and x = 2.
Do you now get the same outcomes?!
timer
1:00

#### Slide 12 -Slide

TASK 5:
SOLUTION on the right:
(Do you remember that we found
the same outcome with the graph?)

Next comes
a bit of Theory,
summarising all this!

#### Slide 14 -Slide

TASK 6:
This is a FOTOVRAAG !
+ Do 33a in your Notebook
+ Take a picture of your work
+ Send it in, in the next slide and
+ We get a collection of your Solutions!

#### Slide 15 -Slide

33a:

For which values of x does the graph intersect the x-axis?
y=x2+3x18
timer
2:00

#### Slide 16 -Open question

Solution TASK 6:

or
x2+3x18=0
(x+6)(x3)=0
X+6=0
x3=0
x=6
x=3
x+6=0

#### Slide 17 -Slide

Homework - 11.4 part 2
§11.4    A x B = 0
Do exercises: 33, 34 and C7
1. Do it
2. Correct it with the Solutions book
3. Send in your results in Classroom