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hannah2013

  • 2 years ago

Simplify the square root of 32/5

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  1. hannah2013
    • 2 years ago
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    |dw:1349986848947:dw|

  2. Venomblast
    • 2 years ago
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    you can split the the square root of 32 into \[\sqrt{16} and \sqrt{2}\]. square root of 16 is 4. so you will have \[4\sqrt{2}/\sqrt{5}. now we have a radical on the denominator. we dont want that. you will need to rationalize.

  3. Venomblast
    • 2 years ago
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    |dw:1349987011151:dw|

  4. Venomblast
    • 2 years ago
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    square root of 4 is 2. so you will have\[4*2\sqrt{5}/5\]

  5. hannah2013
    • 2 years ago
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    |dw:1349987270081:dw| could help explain this one too?

  6. Venomblast
    • 2 years ago
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    im sorry the answer is \[4\sqrt{10}/5\]

  7. Venomblast
    • 2 years ago
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    you will need to rationalize. so you multiply the denominator and numerator by \[3+\sqrt{2}\]

  8. Venomblast
    • 2 years ago
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    |dw:1349987470404:dw|

  9. Venomblast
    • 2 years ago
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    |dw:1349987517152:dw|

  10. Venomblast
    • 2 years ago
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    simplify it. and you will get \[3+\sqrt{2}\]

  11. hannah2013
    • 2 years ago
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    \[\sqrt{x-2}-4=0\]

  12. Venomblast
    • 2 years ago
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    add 4 to both side.then square both side

  13. Venomblast
    • 2 years ago
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    u should get x-2=16. add 2 and x = 18

  14. hannah2013
    • 2 years ago
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    thanks soo much for your help!!

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