1TTO §12.3 Multiplication and addition PTI

Here are the LIKE TERMS again, never leaving us alone.
However, recognising them makes your Maths life easier!
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Here are the LIKE TERMS again, never leaving us alone.
However, recognising them makes your Maths life easier!

Slide 1 - Diapositive

Task:  Try to find the final answer for the easiest one.
Remember your answer, because you won't see the task in the next slide!

Slide 2 - Diapositive

The answer to the easiest one is:

852+252=or872+232=
A
25
B
50
C
269
D
250

Slide 3 - Quiz

Solution:

Slide 4 - Diapositive

Solution:
Did you notice that this task was all
about LIKE TERMS?
The terms 8 x         and
  2 x              are the like terms here.
52
52

Slide 5 - Diapositive

Slide 6 - Diapositive

Task: Which has LIKE TERMS: A, B or C?

Slide 7 - Diapositive

Like terms are in:
A
A
B
B
C
C

Slide 8 - Quiz

All this information...
If it goes a bit too quick for you, 
or it's a bit too much, then remember:
- It's just to warm you up for doing the § on your own.
- Doing your homework might go easier when you've been through the Theory and some Tasks too!

Slide 9 - Diapositive

A.   Intro to the coming THEORY:
Do you remember this, about shortening? Just watch:
1f = f          1x = x
-1f = -f       -1x = -x
This was Ch 10. The same thing applies with squares!
Watch the next slide and be amazed.

Slide 10 - Diapositive

  B. Intro to the next slide, first this recap:
Basic rules:      1f = f    or     f = 1f          and        -1h = -h         or       -h = -1h
4f + 3f = 7f
4f + f = 4f + 1f = 5f
7d - d = 7d - 1d = 6d
Next we will look at similar calculations, only now with quadratic tasks!

Slide 11 - Diapositive

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Slide 16 - Diapositive

How to solve this exercise?
-see next slide too!-

Slide 17 - Diapositive

How to solve this exercise? Like this:
FIRST WORK THEM OUT; ONLY THEN YOU CAN MAKE PAIRS!

Slide 18 - Diapositive

FIRST WORK THEM OUT; ONLY THEN YOU CAN MAKE PAIRS!




Okay, let's do a bit together now:
1.                          x                =
So now it is obvious that  formula 1 and formula 7  are equal!
When doing 21 for homework, work them all out and only then combine them!

Slide 19 - Diapositive

Homework time.
Do §12.3 now.

Slide 20 - Diapositive