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neverforgetvivistee

dividing radicals: what's 12/2-√15 is it 2√15/5 or am i wrong? I don't understand wolfram alpha

  • 2 years ago
  • 2 years ago

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  1. satellite73
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    it is telling you if you rationalize the denominator you will get \[-\frac{24+12\sqrt{15}}{11}\][

    • 2 years ago
  2. satellite73
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    easier just to do it. write \[\frac{12}{2-\sqrt{15}}\times \frac{2+\sqrt{15}}{2+\sqrt{15}}=\frac{12(2+\sqrt{15})}{-11}\]

    • 2 years ago
  3. neverforgetvivistee
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    oh i see where i went wrong thanks!

    • 2 years ago
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spraguer (Moderator)
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