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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
Wiskunde
Middelbare school
vwo
Leerjaar 2
This lesson contains
18 slides
, with
interactive quiz
and
text slides
.
Lesson duration is:
50 min
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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
Slide 1 - Slide
Slide 2 - Slide
S33
Slide 3 - Slide
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
Slide 10 - Slide
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 13 - Slide
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
=
x
2
+
3
x
−
1
8
timer
2:00
Slide 16 - Open question
Solution TASK 6:
or
x
2
+
3
x
−
1
8
=
0
(
x
+
6
)
(
x
−
3
)
=
0
X
+
6
=
0
x
−
3
=
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
Slide 18 - Slide
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