2TH §11.4 AxB=0 (part 1)

What will we do today...

Entry ticket
New theory: §11.4 A x B = 0
Homework: S30, 31, S33

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Slide 1: Slide

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This lesson contains 14 slides, with interactive quiz and text slides.

Lesson duration is: 50 min

Items in this lesson

What will we do today...

Entry ticket
New theory: §11.4 A x B = 0
Homework: S30, 31, S33

Slide 1 - Slide

Entry ticket

timer

6:00

Slide 2 - Slide

§11.4 A x B = 0

All the 'factorising' you have done in the first three paragraphs

will be used today for a special purpose.

So you see that a chapter is not a bunch of loose items!

Slide 3 - Slide

Slide 4 - Slide

Recap on §11.2 and §11.3

To work your way much easier through §11.3,

first we look back shortly.

Slide 5 - Slide

Slide 6 - Slide

Slide 7 - Slide

Solving an Equation that is a Product:

A x B = 0. This equation can only be 0, when

A = 0 or B = 0

In the next example the 'A' and the 'B' are expressions with 'x'.

Just watch!

Slide 8 - Slide

Slide 9 - Slide

Slide 10 - Slide

Task 1:

Work out in your head the two Solutions:

The two values for m. Key in your answers in the next slide

timer

1:00

Slide 11 - Slide

My answer is:
A. 0 and -7 B. 2 and -7
C. 0 and 2 D. -2 and 7

0 and -7

2 and -7

0 and 2

-2 and 7

Slide 12 - Quiz

(Task and) Solution:

Slide 13 - Slide

Homework

§11.4 A x B = 0

Do exercises: S30, 31, S33

1. Do it

2. Correct it with the Solutions book

Slide 14 - Slide