Binomial Radical Expressions! Question is in the attachment file!

- anonymous

Binomial Radical Expressions! Question is in the attachment file!

- katieb

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- anonymous

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- anonymous

A.

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- anonymous

B.

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- anonymous

C.

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- anonymous

D.

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- dumbcow

To rationalize the denominator multiply top and bottom by conjugate:
\[\frac{7}{1-\sqrt{3}}*\frac{1+\sqrt{3}}{1+\sqrt{3}}\]

- dumbcow

1 question at a time please

- anonymous

Those weren't questions attachements paint 1 through 5 are the answer choices!

- anonymous

There labeled a b c and d.

- dumbcow

oh i see :)

- dumbcow

hmm i don't like any of the answer choices

- anonymous

Which one is it thenn?

- dumbcow

work it out, i showed you what you need to do

- anonymous

I really don't know how to do this.

- anonymous

Can you please just tell me which answer it is please! That's my last questionn!

- dumbcow

just distribute on top and FOIL on bottom
--> answer = (7 + 7sqrt3)/-2

- anonymous

Which letter choice is that cause it doesn't seem to match anyy.

- dumbcow

thats what i said before

- anonymous

Ok well if you had to choose out of the choices which do you think would be right?

- anonymous

dumbcow...can you help me on that same problem when ur done

- dumbcow

none
did you know that A and B are exactly the same

- anonymous

Ohhh okayy I'll post you the last choice that's my faultt

- anonymous

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- anonymous

Alright thats the choicee.

- anonymous

So is the newest choice the answer?

- dumbcow

it seems to be the closest but it is not correct either

- dumbcow

did i get the original question correct ??

- anonymous

Alright thanks for the help!

- dumbcow

you know you can use a calculator to verify these as well

- dumbcow

7/(1-sqrt3) = -9.562
so which answer equals -9.562

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