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anonymous

  • 5 years ago

evaluate the power fraction f(x)=x^5/4 = 81

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  1. anonymous
    • 5 years ago
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    Is the power of x equal to 5/4?

  2. anonymous
    • 5 years ago
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    It is f(x)=x^5/4 x=81

  3. anonymous
    • 5 years ago
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    If x=81 then subs it....ie 81^5/4...fourth root of 81^5 in other words

  4. anonymous
    • 5 years ago
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    If f(x) = 81 then x=81^4/5

  5. anonymous
    • 5 years ago
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    depends on which is the correct question

  6. anonymous
    • 5 years ago
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    4sq 81^5

  7. anonymous
    • 5 years ago
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    is that right that is what I have

  8. anonymous
    • 5 years ago
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    The power of x in the original quetion is 5 then?

  9. anonymous
    • 5 years ago
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    do you know how to do sq. root 3y+2=4 yeah I got that

  10. anonymous
    • 5 years ago
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    it says solve there are no examples in my book or the dvd's i have

  11. anonymous
    • 5 years ago
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    The question posted can be solved but please tell me what the power of x is in the question

  12. anonymous
    • 5 years ago
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    power of x was 5

  13. anonymous
    • 5 years ago
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    power of x was 5/4

  14. anonymous
    • 5 years ago
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    ok...then if x^5/4 =81...then x= 81^4/5

  15. anonymous
    • 5 years ago
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    so we make it a reciprocal

  16. anonymous
    • 5 years ago
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    The power 5/4 means the 5th power and then take the 4th root of the answer

  17. anonymous
    • 5 years ago
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    4sq.81^5

  18. anonymous
    • 5 years ago
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    So to get rid of it to leave x...you do the opposite ......5th root and 4th power

  19. anonymous
    • 5 years ago
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    5sq.81^4

  20. anonymous
    • 5 years ago
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    5th rt of 81^4.....only if f(x)=81 was your question

  21. anonymous
    • 5 years ago
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    f(x)=x^5/4 x=81

  22. anonymous
    • 5 years ago
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    If x=81..then simple...fourth rt of 81^5

  23. anonymous
    • 5 years ago
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    Good there then...sorry it took a while to sort out the question

  24. anonymous
    • 5 years ago
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    okay got it

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