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anonymous

  • one year ago

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  1. anonymous
    • one year ago
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    Solve the equation \[\sqrt{x+4}-3=1\] for the variable. Show each step of your solution process.

  2. anonymous
    • one year ago
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    @welshfella @ankit042 @Loser66 @DarkMoonZ @Nnesha

  3. welshfella
    • one year ago
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    first add 3 to both sides of the equation then square both sides

  4. welshfella
    • one year ago
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    then its easy

  5. anonymous
    • one year ago
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    Ok so \[\sqrt{x+4+3}-3=1+3\] So \[\sqrt{x+4}=4\]

  6. anonymous
    • one year ago
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    And the \[\sqrt{x^2+16}=16\]

  7. anonymous
    • one year ago
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    @welshfella

  8. welshfella
    • one year ago
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    No when you 'square the square root' of something the answer is that something. for example sqrt 4 squared = 4

  9. anonymous
    • one year ago
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    So take away the square root thing?

  10. anonymous
    • one year ago
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    So just x+4 = 4

  11. welshfella
    • one year ago
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    yea - so what do you get after sqrt(x + 4) = 4

  12. welshfella
    • one year ago
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    no not x + 4 = 4 - BOTH SIDES of the equation must be squared

  13. anonymous
    • one year ago
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    I'm not following, what would the left side be?

  14. welshfella
    • one year ago
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    the keft side is x + 4 - that is correct but the right side must also be squared - the 4

  15. anonymous
    • one year ago
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    So the right side is 16?

  16. welshfella
    • one year ago
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    yes

  17. anonymous
    • one year ago
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    x + 4 = 16

  18. welshfella
    • one year ago
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    x + 4 = 16

  19. anonymous
    • one year ago
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    Ah because it wasn't under the square root sign.

  20. welshfella
    • one year ago
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    gotta go I think you got it now

  21. welshfella
    • one year ago
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    yea

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spraguer (Moderator)
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