## anonymous 5 years ago Binomial Radical Expressions! Question is in the attachment file!

1. anonymous

2. anonymous

A.

3. anonymous

B.

4. anonymous

C.

5. anonymous

D.

6. dumbcow

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

7. dumbcow

1 question at a time please

8. anonymous

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

9. anonymous

There labeled a b c and d.

10. dumbcow

oh i see :)

11. dumbcow

hmm i don't like any of the answer choices

12. anonymous

Which one is it thenn?

13. dumbcow

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

14. anonymous

I really don't know how to do this.

15. anonymous

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

16. dumbcow

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

17. anonymous

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

18. dumbcow

thats what i said before

19. anonymous

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

20. anonymous

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

21. dumbcow

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

22. anonymous

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

23. anonymous

24. anonymous

Alright thats the choicee.

25. anonymous

So is the newest choice the answer?

26. dumbcow

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

27. dumbcow

did i get the original question correct ??

28. anonymous

Alright thanks for the help!

29. dumbcow

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

30. dumbcow

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