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AriPotta

  • one year ago

Identify all of the following solutions of...

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  1. TimSmit
    • one year ago
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    Try filling all of them in and seeing whether they satisfy the equation.

  2. kirbykirby
    • one year ago
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    You can do it algebraically, or you can plug in the numbers from the list.

  3. TimSmit
    • one year ago
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    Algebraically is better, but because you need to square the entire left side it might be cumbersome.

  4. TimSmit
    • one year ago
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    Correct, using 8 gives \[\sqrt{0}+8 = 8\] and using 9: \[\sqrt{1}+8 = 9\]

  5. AriPotta
    • one year ago
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    alright, thanks :]

  6. Jonask
    • one year ago
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    \[\sqrt{x-8}=x-8 \implies x-8=(x-8)^2\] \[(x-8)^2-(x-8)=(x-8)(x-8-1)=0\] 8 and 9

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