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alyssababy7

  • 2 years ago

simplify the radical expression. (square root of 10/121)

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  1. campbell_st
    • 2 years ago
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    \[\sqrt{\frac{10}{121}} = \pm \frac{\sqrt{10}}{11}\]

  2. alexwee123
    • 2 years ago
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    |dw:1335940997334:dw|

  3. thomas5267
    • 2 years ago
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    The square of something is always positive. So the correct answer should be \(\frac{\sqrt{10}}{11}\).

  4. thomas5267
    • 2 years ago
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    @campbell_st

  5. campbell_st
    • 2 years ago
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    ok... so \[\sqrt{\frac{10}{(-11)^2}} \neq \sqrt{\frac{10}{121}}\]

  6. thomas5267
    • 2 years ago
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    Sorry, I mean the square root of real numbers are always positive. Sources: http://mathworld.wolfram.com/SquareRoot.html http://en.wikipedia.org/wiki/Square_root

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