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adell [148]
3 years ago
11

PLEASE ANSWER ASAP

Mathematics
2 answers:
blondinia [14]3 years ago
7 0

Answer:

I've attached the Answer

Step-by-step explanation:

here it is

denis23 [38]3 years ago
6 0

Answer:

(\sqrt{6}+\sqrt{3})(\sqrt{6}-\sqrt{3})=3

(\sqrt{5}-\sqrt{2})(\sqrt{2}+\sqrt{5})=3

Step-by-step explanation:

We want to simplify the expression:

(\sqrt{6}+\sqrt{3})(\sqrt{6}-\sqrt{3})

Notice that this is the difference of two squares pattern. Namely:

a^2-b^2=(a+b)(a-b)

If we let <em>a</em> = √6 and <em>b</em>  =√3, we acquire:

(a+b)(a-b)

Expand accordingly:

=a^2-b^2

Back-substitute:

=(\sqrt{6})^2-(\sqrt{3})^2

Simplify:

=6-3=3

For the second expression, we have a similar pattern:

(\sqrt{5}-\sqrt{2})(\sqrt{2}+\sqrt{5})

We can first rewrite the expression (commutative property):

=(\sqrt{5}-\sqrt{2})(\sqrt{5}+\sqrt{2})

And if we let <em>a</em> = √5 and <em>b</em> = √2:

=(a-b)(a+b)

Expand accordingly:

=a^2-b^2

Back-substitute and simplify:

=(\sqrt{5})^2-(\sqrt{2})^2=5-2=3

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