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anonymous

  • 5 years ago

-18x^2y^-1/2 over 6x^-1/5y....Simplify and express the answer with positive exponents. Evaluate numerical expressions.

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  1. anonymous
    • 5 years ago
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    do you need help in learning how to do these?

  2. anonymous
    • 5 years ago
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    yes i do

  3. anonymous
    • 5 years ago
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    when you write the expression as a fraction, the letters with the negative powers ...if they are above the viculum they go below and the sign changes in their pwer

  4. anonymous
    • 5 years ago
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    Ok I understand that part

  5. anonymous
    • 5 years ago
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    if they are below the vinculum you take them aboce and change the sign in their powers

  6. anonymous
    • 5 years ago
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    If you end up with ...eg...y^2 x y^1/2...you add the powers

  7. anonymous
    • 5 years ago
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    Ok, add them...Gotcha

  8. anonymous
    • 5 years ago
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    I can lead you through this question if you wish

  9. anonymous
    • 5 years ago
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    Yes if you could please

  10. anonymous
    • 5 years ago
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    Write the whole thing as numerator over denominator

  11. anonymous
    • 5 years ago
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    \[x^2/x^{-1/5}=x^2x^{1/5}=x^{11/5}\]

  12. anonymous
    • 5 years ago
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    did it

  13. anonymous
    • 5 years ago
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    -18/6= -3/1 = -3

  14. anonymous
    • 5 years ago
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    6 can go into the numbers 18 and 6...cancel

  15. anonymous
    • 5 years ago
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    cancel them out?

  16. anonymous
    • 5 years ago
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    \[y ^{-1/2}/y = y ^{1/2}y =y ^{3/2}\]

  17. anonymous
    • 5 years ago
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    you will get -3 on top and the 6 at the bottom cancels

  18. anonymous
    • 5 years ago
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    alright ok

  19. anonymous
    • 5 years ago
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    Notice x has a negative power underneath

  20. anonymous
    • 5 years ago
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    oh opss.... \[y^{-1/2}/y= 1/y^{1/2}y= 1/y^{3/2}\]

  21. anonymous
    • 5 years ago
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    so in the end it's\[-3x^{11/5}/y^{3/2}\]

  22. anonymous
    • 5 years ago
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    i notice it

  23. anonymous
    • 5 years ago
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    carry x^-1/5 on top...it becomes x^1/5 and it is multiplied by x^2

  24. anonymous
    • 5 years ago
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    I am getting the hang of this, I think that I get it now

  25. anonymous
    • 5 years ago
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    The y^-1/2 goes to the bottom

  26. anonymous
    • 5 years ago
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    u'll manage now ?

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