What is LessonUp
Search
Channels
Log in
Register
‹
Return to search
5.2 The quadratic formula jko
5-2 Using the quadratic formula
What you need:
- Textbook, writingbook, iPad - Pen, pencil, geotriangle - Calculator
1 / 22
next
Slide 1:
Slide
Wiskunde
Middelbare school
havo, vwo
Leerjaar 3
This lesson contains
22 slides
, with
interactive quizzes
,
text slides
and
1 video
.
Lesson duration is:
50 min
Start lesson
Save
Share
Print lesson
Items in this lesson
5-2 Using the quadratic formula
What you need:
- Textbook, writingbook, iPad - Pen, pencil, geotriangle - Calculator
Slide 1 - Slide
Lesson goals
Use the quadratic equation to solve equations.
Slide 2 - Slide
What if factorisation doesn't work
Slide 3 - Slide
You use the quadratic equation
First write the equation in the standard form...
Slide 4 - Slide
So actually the quadratic equation is
but to simplify the calculation we use
D
Slide 5 - Slide
Slide 6 - Slide
Slide 7 - Slide
Slide 8 - Slide
A
a=1 b=5 c=3
B
a=3 b=-5 c=1
C
a=1 b=-5 c=3
D
a=3 b=5 c=1
Slide 9 - Quiz
x
2
−
5
x
+
3
Calculate the Discriminant
D
i
s
c
r
i
m
i
n
a
n
t
=
b
2
−
4
⋅
a
⋅
c
A
-7
B
13
C
21
D
37
Slide 10 - Quiz
x
2
−
5
x
+
3
Solve the equation
x
1
=
2
⋅
a
(
−
b
+
√
D
)
x
2
=
2
⋅
a
(
−
b
−
√
D
)
A
x=4,3 or x=-0,7
B
x=4,3 or x=0,7
C
x=-4,3 or x=0,7
D
x=-4,3 or x=-0,7
Slide 11 - Quiz
Slide 12 - Slide
Slide 13 - Slide
A
-1
B
1
Slide 14 - Quiz
−
x
2
−
4
x
+
1
2
Calculate D
A
-32
B
32
C
60
D
64
Slide 15 - Quiz
−
x
2
−
4
x
+
1
2
Solve the equation
A
x=6 or x=2
B
x=-6 or x=2
C
x=6 or x=-2
D
x=-6 or x=-2
Slide 16 - Quiz
Slide 17 - Slide
Slide 18 - Slide
Slide 19 - Slide
Slide 20 - Slide
Try on your own
1, 2, 5 and 7
RULES:
In your writingbook
Start with writing down the letters. Start with D, a,b,c,
Extra excercise: Bettermarks
Challenge: Do both!
HW - Chapter 5: 10-15
Slide 21 - Slide
Slide 22 - Video
More lessons like this
8-2 The quadratic formulae
April 2019
- Lesson with
24 slides
Wiskunde
Middelbare school
havo
Leerjaar 3
3Tvwo § 4.3 The quadratic formula
November 2019
- Lesson with
29 slides
Wiskunde
Middelbare school
havo
Leerjaar 3
8-4 Quadratic equations
April 2019
- Lesson with
24 slides
Wiskunde
Middelbare school
havo
Leerjaar 3
Solving by factorising jko
November 2022
- Lesson with
37 slides
Wiskunde
Middelbare school
vwo
Leerjaar 2
8-1 Solving by factorising
April 2019
- Lesson with
35 slides
Wiskunde
Middelbare school
havo
Leerjaar 3
ABC-formula revision and practice 3HAVO
March 2021
- Lesson with
16 slides
Wiskunde
Middelbare school
havo
Leerjaar 3
3Vtto_Ch4: Quadratic formula herhaling
December 2020
- Lesson with
27 slides
Wiskunde
Middelbare school
vwo
Leerjaar 3
6.3 The location of a parabola with respect to the x-axis
February 2023
- Lesson with
18 slides
Wiskunde
Middelbare school