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anonymous

  • 5 years ago

Solve: (3sqrt2-9sqrt3)(5sqrt2+15sqrt3) Please help

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  1. radar
    • 5 years ago
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    \[(3\sqrt{2}-9\sqrt{3})(5\sqrt{2}+15\sqrt{3})\]

  2. anonymous
    • 5 years ago
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    yes that is the problem...do you know how to do it?

  3. radar
    • 5 years ago
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    Multiply using rules that you need to know (15)(2)-45sqrt6+45sqr6-(135)(3) simplify: 30-405=-375

  4. radar
    • 5 years ago
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    Do you know the rules for multiplying radicals?

  5. anonymous
    • 5 years ago
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    Somewhat

  6. anonymous
    • 5 years ago
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    This class is killing me so bad....confusing

  7. radar
    • 5 years ago
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    Take your time and practice

  8. anonymous
    • 5 years ago
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    Thank you so much

  9. radar
    • 5 years ago
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    \[\sqrt{x}\sqrt{y}=\sqrt{xy}\]

  10. anonymous
    • 5 years ago
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    That makes sense. but why did you pull the 2 out of the matching radicals

  11. radar
    • 5 years ago
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    \[\sqrt{x}\sqrt{x}=x\]

  12. anonymous
    • 5 years ago
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    Awwww...that's where i was making my mistake then...thank you so much for the help!

  13. radar
    • 5 years ago
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    \[\sqrt{2}\sqrt{2}=2\]

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spraguer (Moderator)
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