## anonymous 5 years ago simplify the square root of 8n-27 devided by 4-n

1. anonymous

kstatefan, do you know how to divide polynomials involving variables yet or no?

2. myininaya

-8-27/(4-n)

3. anonymous

I can show you if you need me to kstatefan. Just trying to assess how much I should go into detail

4. myininaya

what is 8n/(-n) simplify to

5. anonymous

-8 right?

6. myininaya

yes

7. myininaya

put that where the quotient goes and then multiply by the divisor to figure out what you need to subtract

8. anonymous

k

9. myininaya

oops i got the wrong remainder above

10. myininaya

-8+5/(4-n)

11. myininaya

so we have (8n-27)-(8n-32) which is ...

12. anonymous

this is exponential and logarithmic functions we arent doing this right

13. myininaya

oh thats the sqrt(8n-27)

14. myininaya

i didnt see the sqrt sorry

15. myininaya

so we aren't dividing. I would say it is already simplified

16. myininaya

how do you use log or exponentiation here

17. myininaya

exponential*

18. anonymous

and i said it wrong the funtion is actually$\sqrt{(8^{n}-27)\div (4^{-n})}$

19. anonymous

and i have no idea

20. myininaya

=$\sqrt{8^n*4^n-27(4^n)}=\sqrt{32^n-27(4^n)}$

21. myininaya

$\sqrt{4^n}*\sqrt{(8^n-27})=2^n*\sqrt{(8^n-27)}$