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anonymous

  • one year ago

Help with conjugates (Algebra 2B) equation and explanation in comments.

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  1. anonymous
    • one year ago
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    So I need to rationalize the denominator and simplify but I don't know how I would go about that since I can't figure out the conjugate. \[\frac{ 15\sqrt{6} }{ 3\sqrt{5} }\]

  2. SolomonZelman
    • one year ago
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    multiply times √5 on top and bottom

  3. SolomonZelman
    • one year ago
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    |dw:1435785908571:dw|

  4. anonymous
    • one year ago
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    Ok so the denominator would be 15 but how to I go about multiplying the numerator?

  5. SolomonZelman
    • one year ago
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    6 × 5 = 30 same way, (√6) × (√5) = (√30)

  6. SolomonZelman
    • one year ago
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    |dw:1435786199555:dw|

  7. anonymous
    • one year ago
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    It would just simplify to the square root of 30

  8. SolomonZelman
    • one year ago
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    yes

  9. SolomonZelman
    • one year ago
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    And √30 can't be simplified, so you are done....

  10. anonymous
    • one year ago
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    ok thanks

  11. SolomonZelman
    • one year ago
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    yw

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