1.4 B simplifying square roots 1

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Slide 1: Tekstslide
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In deze les zitten 14 slides, met interactieve quizzen en tekstslides.

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Slide 1 - Tekstslide

Today
You  use the rule for multiplying
roots to simplify expressions.

You can rewrite fractions to bring
square roots form the denominator to
the numerator.


Slide 2 - Tekstslide

How are you today?
😒🙁😐🙂😃

Slide 3 - Poll

The rule
√​a​​​⋅√​b​​​=√​a⋅b​​​

Slide 4 - Tekstslide

Calculate
You can use a capital v to indicate a square root here.
√​a​​​⋅√​b​​​=√​a⋅b​​​
√​12​​​⋅√​3​​​

Slide 5 - Open vraag

Calculate
You can use a capital v to indicate a square root here.
√​a​​​⋅√​b​​​=√​a⋅b​​​
√​15​​​⋅√​3​​​⋅√​5​​​

Slide 6 - Open vraag

Calculate
You can use a capital v to indicate a square root here.
√​a​​​⋅√​b​​​=√​a⋅b​​​
(√​3​​​)​2​​

Slide 7 - Open vraag

Simplifying roots by factorising
Let's observe
√​75​​​

Slide 8 - Tekstslide

Simplifying roots by factorising
Let's observe

also
√​75​​​
75=5⋅15
75=3⋅25

Slide 9 - Tekstslide

Simplifying roots by factorising
Let's observe

so 
is this progress?
√​75​​​
75=5⋅15
√​75​​​=√​5​​​⋅√​15​​​

Slide 10 - Tekstslide

Simplifying roots by factorising
Let's observe

so 
Is this progress? Why?
√​75​​​
75=3⋅25
√​75​​​=√​3​​​⋅√​25​​​

Slide 11 - Tekstslide

Simplifying roots by factorising
Let's observe

so 
Is this progress? Why?

Yes, because 
√​75​​​
75=3⋅25
√​75​​​=√​25​​​⋅√​3​​​
√​25​​​⋅√​3​​​=5⋅√​3​​​=5√​3​​​

Slide 12 - Tekstslide

Simplify
You can use a capital v to indicate a square root here.
√​a​​​⋅√​b​​​=√​a⋅b​​​
√​200​​​

Slide 13 - Open vraag

Homework
79,80,81,82


Slide 14 - Tekstslide