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yokie

  • 4 years ago

(a) What is [- sqrt(144)]? (b) What is [sqrt(- 144)]? I think it is -12, but donot know (b)

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  1. uyqn
    • 4 years ago
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    \[\sqrt{-144}=12i\] as it becomes imaginary if you take the root of a negative number.

  2. aditya.sinha
    • 4 years ago
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    b) is 12i where i is iota ...but its a complex no.

  3. raheen
    • 4 years ago
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    [- sqrt(144)] = -12

  4. raheen
    • 4 years ago
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    [sqrt(- 144)] = 12 i

  5. raheen
    • 4 years ago
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    the first one is real but the second is imaginary

  6. yokie
    • 4 years ago
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    So [sqrt(- 144)] must not be a real number?

  7. penpen29
    • 4 years ago
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    \[-\sqrt{144}=-12\]\[\sqrt{-144}=12i\]

  8. raheen
    • 4 years ago
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    yes every sqrt(-number) = imaginary number

  9. penpen29
    • 4 years ago
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    if you will get the nth root of a number wherein n is even,the answer is an imaginary number

  10. penpen29
    • 4 years ago
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    given that the number inside the radical is negative

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