## anonymous 5 years ago 4 + SR of 27 Divided by 2-3 SR of 27

1. anonymous

hang on, need a pen

2. anonymous

need the work or just the answer?

3. anonymous

could you do the work?

4. anonymous

$(4+\sqrt{27})/(2-\sqrt{27})$ multiply top and bottom by (2 + root27), then foil. this gives you a numerator of 8+6root27+27 and a denominator of 4-27, which simplifies to a numerator of 35+6root27 over -23, which again simplifies to 35+18root3, all over -23

5. anonymous

if you need more specific expl, let me know

6. anonymous

wow i got something a bit different for the numerator and denominator

7. anonymous

what did you get?

8. anonymous

i got 8+12root27 + 2root27+81 for the numerator

9. anonymous

for the denominator i got 4-9root27

10. anonymous

oh, ha, that's because i didn't see the 3 in the orig problem. sorry hang on, let me do it again.

11. anonymous

your numerator is correct but needs to be simplified. your denominator is wrong - it should be 4-9*27, which is 4-81, which is -77

12. anonymous

why the *?

13. anonymous

that means multiply

14. anonymous

the numerator simplifies down to 89+42root3

15. anonymous

no i meant for the denominator

16. anonymous

i know, it means its 4 minus 9times27

17. anonymous

okay so hold on after i foil my number would simplify to 89+14root27. my denonimator would be 4-9*27?

18. anonymous

not number, i meant numerator.

19. anonymous

yes, and then that denominator is -77, and the numerator can be simplified further: root27 is 3root3, so 14root27 is 14*3root3 which is 42root3

20. anonymous

oooooh i get it. so would 89+42root3 over -77 the answer or do i simpify even more?

21. anonymous

yes, that's as far as you can go. you're done!

22. anonymous

Thank so much :0]

23. anonymous

Thank so much :0]

24. anonymous

my pleasure!