# 2TH §11.3 Factorising trinomials

§11.3 Factorising trinomials
• Entry ticket: Factorising binomials
• New theory: Factorising trinomials
• Homework §11.3 Do exercises 22, 23, S24, S25
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Slide 1: Tekstslide
WiskundeMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 16 slides, met tekstslides.

Lesduur is: 50 min

## Onderdelen in deze les

§11.3 Factorising trinomials
• Entry ticket: Factorising binomials
• New theory: Factorising trinomials
• Homework §11.3 Do exercises 22, 23, S24, S25

Entry ticket

#### Slide 6 -Tekstslide

Now a task for you will follow!

#### Slide 7 -Tekstslide

- COPY the Task on the following slide,
- make the TABLE for the PRODUCT and the SUM -like the one you just saw (page 179).

#### Slide 8 -Tekstslide

Make the TABLE for:
timer
2:00

Solution:

#### Slide 10 -Tekstslide

FACTORISE (making a good use of the TABLE!):
timer
0:30

#### Slide 11 -Tekstslide

Solution:
The factorisation of:

is:
This is because:    -5  x  -3  =  15 (the Product) and
-5  +  -3  =  -8 (the Sum)
h=(t5)(t3)

#### Slide 12 -Tekstslide

The same as with task 1:
- Make the Table for the Product
- Make the factorisation

#### Slide 13 -Tekstslide

Note: do this with or without a TABLE!
timer
2:00

#### Slide 14 -Tekstslide

Factorise:                           Solution:
So the Solution is:

#### Slide 15 -Tekstslide

Homework
§11.3 Do exercises 22, 23, S24, S25

TIP: if it is still difficult for you, consult the METHOD on p.179 again!