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Ash90 Group Title

simplify the expression (x^2-10x+25)^1/2

  • 8 months ago
  • 8 months ago

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  1. Ash90 Group Title
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    i have (x-5)^2=((x-5)^2)1/2=(x-5) then i do [5, infinity) but the answer is wrong

    • 8 months ago
  2. goformit100 Group Title
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    Use multinomial theorem.

    • 8 months ago
  3. hartnn Group Title
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    simplified form is x-5

    • 8 months ago
  4. hartnn Group Title
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    u need domain ?

    • 8 months ago
  5. Ash90 Group Title
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    i have x-5 and for my domain answer i put...

    • 8 months ago
  6. Ash90 Group Title
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    |dw:1389459862624:dw|

    • 8 months ago
  7. Ash90 Group Title
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    or should it be...

    • 8 months ago
  8. hartnn Group Title
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    why ?? why can x not be less than 5 ?

    • 8 months ago
  9. Ash90 Group Title
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    |dw:1389459912753:dw|

    • 8 months ago
  10. hartnn Group Title
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    whats the domain of x-5 ?

    • 8 months ago
  11. hartnn Group Title
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    what if x= 3 is that allowed value ?

    • 8 months ago
  12. hartnn Group Title
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    note that x-5 does not place any restrictions on x

    • 8 months ago
  13. ParthKohli Group Title
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    The simplified form is |x - 5|.

    • 8 months ago
  14. ParthKohli Group Title
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    The domain of that should be all real numbers. x^2 - 10x + 25 is always positive, so you can input everything.

    • 8 months ago
  15. Ash90 Group Title
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    so 5

    • 8 months ago
  16. ParthKohli Group Title
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    No, (-infty,infty)

    • 8 months ago
  17. Ash90 Group Title
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    yes everything like -infinity to positive infinity

    • 8 months ago
  18. ParthKohli Group Title
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    Yup.

    • 8 months ago
  19. Ash90 Group Title
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    oh see i had the left with a bracket so that was wrong

    • 8 months ago
  20. Ash90 Group Title
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    thanks

    • 8 months ago
  21. ParthKohli Group Title
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    Do you need the range as well?

    • 8 months ago
  22. Ash90 Group Title
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    after i had messed it up i just started guessing

    • 8 months ago
  23. Ash90 Group Title
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    let me see..

    • 8 months ago
  24. Ash90 Group Title
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    yeah i think so

    • 8 months ago
  25. ParthKohli Group Title
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    OK, so the simplification is |x - 5|. Do you know what the range of any absolute value function is?

    • 8 months ago
  26. Ash90 Group Title
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    the range would be [5, positive ) right?

    • 8 months ago
  27. hartnn Group Title
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    nopes, the range of |x| is x>=0

    • 8 months ago
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