## anonymous one year ago Simplify

1. anonymous

simplify what

2. anonymous

Hold on im getting it

3. anonymous

Simplify cube root of 7 over fifth root of 7. 7 to the power of 1 over 5 7 to the power of 8 over 15 7 to the power of 5 over 3 7 to the power of 2 over 15

4. anonymous

5. anonymous

How do I simplify ??

6. anonymous

im only in 6th grade :( i cant do all that

7. anonymous

Ohh, okay.

8. anonymous

@welshfella help

9. anonymous

Do you know how to turn the radicals into exponents?

10. anonymous

No :(

11. anonymous

Use this rule$\sqrt[n]{a}=a^{\frac{ 1 }{ n }}$ So you can change your numerator to $7^\frac{ 1 }{ 3 }$ What would the denominator be?

12. anonymous

I dont get it

13. anonymous

|dw:1442935986567:dw|

14. anonymous

does that make sense?

15. anonymous

Kind of.. I still dont get it. Nvm ill just guess on it cuz I have to hurry and get this test done before 12. Thanks though!

16. anonymous

what is up with the drawing it makes no sense

17. anonymous

what about it doesn't make sense?

18. anonymous

Well, it does make sense I just dont how to do it when theres a fraction of the radical things

19. anonymous

You have to take the small number from the radical and write it as an exponent.$\frac{ \sqrt[3]{7} }{ \sqrt[5]{7} }=\frac{ 7^{\frac{ 1 }{ 3 }} }{ 7^{\frac{ 1 }{ 5 }} }=7^{(\frac{ 1 }{ 3 }-\frac{ 1 }{ 5 })}$

20. anonymous

21. anonymous

@peachpi

22. anonymous

no. subtract 1/3 - 1/5 to get the final exponent

23. anonymous

idk. Ugh forget it