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anonymous

  • one year ago

How do I know if it is rational or not? http://i.imgur.com/OGtUJyY.png

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  1. ganeshie8
    • one year ago
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    \[2\sqrt{3}*\sqrt{12} = 2\sqrt{3*12} = 2\sqrt{36} = 2*6 = 12=\dfrac{12}{1}\]

  2. ganeshie8
    • one year ago
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    It is a ratio of two integers, so it is rational.

  3. anonymous
    • one year ago
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    So if it can be written as a ration, its rational?

  4. ganeshie8
    • one year ago
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    Exactly!

  5. anonymous
    • one year ago
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    Wat about \[2\sqrt{3}-2\sqrt{3}\]

  6. anonymous
    • one year ago
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    What*

  7. anonymous
    • one year ago
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    I think it's irrational because the outcome is 0 and 0 cannot be written as a ratio.

  8. ganeshie8
    • one year ago
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    \[0 = \dfrac{0}{1}\] every integer is rational

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