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ValentinaT

  • 2 years ago

Simplify the radical expression by rationalizing the denominator. 5/√30

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  1. ValentinaT
    • 2 years ago
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    \[\frac{ 5 }{ \sqrt{30} }\]

  2. anonymous
    • 2 years ago
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    multiply top and bottom by \(\sqrt{30}\)

  3. anonymous
    • 2 years ago
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    then cancel the 5

  4. Luigi0210
    • 2 years ago
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    \[\frac{ 5 }{ \sqrt{30} }*\frac{ \sqrt{30} }{ 30 }=\frac{ 5\sqrt{30} }{ 30 }=\frac{ \sqrt{30} }{ 6 }\]

  5. ValentinaT
    • 2 years ago
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    Thank you!

  6. Luigi0210
    • 2 years ago
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    Yup :P

  7. ValentinaT
    • 2 years ago
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    Could you help me with one more?

  8. ValentinaT
    • 2 years ago
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    Solve the equation. Identify any extraneous solutions. √a = -2

  9. Luigi0210
    • 2 years ago
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    we t solve for this you would square both sides..\[(\sqrt{a})^2=(-2)^2\] a=4

  10. Luigi0210
    • 2 years ago
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    \[\sqrt{4}=\pm2\]

  11. ValentinaT
    • 2 years ago
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    Thanks!

  12. Luigi0210
    • 2 years ago
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    You're welcome :)

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