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pottersheep Group Title

Is (+-i√15)/5 equal to +-i√(3/5) ???? Shouldnt i be over 5???

  • 2 years ago
  • 2 years ago

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  1. TuringTest Group Title
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    \[\frac{\sqrt{15}}5=\frac{\sqrt{3\cdot5}}5=\sqrt{\frac35}\]

    • 2 years ago
  2. pottersheep Group Title
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    Thanks, shouldn'tthe i still be over 5 tho?

    • 2 years ago
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    nope...

    • 2 years ago
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    \[\pm i\frac{\sqrt{15}}5=\pm i\frac{\sqrt{3\cdot5}}5=\pm i\sqrt{\frac{3\cdot5}{25}}=\pm i\sqrt{\frac35}\]

    • 2 years ago
  5. pottersheep Group Title
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    oo but the i was over 5 to begin with

    • 2 years ago
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    but the 5 can move around...

    • 2 years ago
  7. pottersheep Group Title
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    ok let me try to process this xD

    • 2 years ago
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    \[\pm\frac i5\sqrt{15}=\pm i\frac{\sqrt{15}}5=\pm i\frac{\sqrt{3\cdot5}}5=\pm i\sqrt{\frac{3\cdot5}{25}}=\pm i\sqrt{\frac35}\]

    • 2 years ago
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    remember that\[\frac{2i}3=i\frac23\]not\[\frac{2i}3=\frac i3\frac23\]

    • 2 years ago
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    \[a\frac bc=b\frac ac=\frac{ab}c\]

    • 2 years ago
  11. pottersheep Group Title
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    :O it is???

    • 2 years ago
  12. pottersheep Group Title
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    ooo

    • 2 years ago
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    what else could it be?

    • 2 years ago
  14. pottersheep Group Title
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    THANKSSS

    • 2 years ago
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    \[\frac{ab}c=a\cdot\frac bc\neq\frac ac\cdot\frac bc\]

    • 2 years ago
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    welcome :D

    • 2 years ago
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