## iheartfood Group Title Simplify the expression!! :) one year ago one year ago

1. iheartfood

|dw:1353809728543:dw|

2. iheartfood

A. 5e/2 B. 5/x2 C. 10ex D. 5 - 2 ln(x)

3. cnknd

here are the formulas u can use: ln(A*B) = ln(A) + ln(B) ln(A/B) = ln(A) - ln(B)

4. LolWolf

Don't forget: $\ln(a^b)=b\ln(a)$And: $\ln(e)=1$

5. iheartfood

k so i have to rearrange it right?

6. LolWolf

Try using those rules.

7. iheartfood

im not quite sure how.. can u pls show me?

8. CliffSedge

Use this one first. ln(A/B) = ln(A) - ln(B)

9. iheartfood

k but how do i plug them in?? i have a hard time figuring out what to plug into where..

10. CliffSedge

|dw:1353811209406:dw|

11. iheartfood

|dw:1353811258993:dw| is that it?

12. CliffSedge

Ok, now use this: ln(a^b)=b*ln(a)

13. iheartfood

|dw:1353811431501:dw| is that right?

14. CliffSedge

I'm not sure what that is. Here's how I see it. |dw:1353811722405:dw|

15. iheartfood

kk :) following:)

16. CliffSedge

Do you see how that matches the pattern of ln(a^b)=b*ln(a) ?

17. iheartfood

yeah :) so what do i do next? :)

18. CliffSedge

Last is to use this: ln(e)=1

19. iheartfood

do i get this? 5-2ln(x) ??

20. iheartfood

@CliffSedge ?

21. ktnguyen1

I think u got it corrct 5-2ln(x)

22. iheartfood

are u sure?? based on what @CliffSedge said, it leads to my answer being D. 5-2ln(x) ??

23. iheartfood

@ktnguyen1 ? :)

24. ktnguyen1

Yeah D. Is correct one. Im quite sure:)

25. iheartfood

kk thank you :)

26. ktnguyen1

You r wlcm! Pretty much you got iy yourself:)