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



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

aditya.sinha
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b) is 12i where i is iota ...but its a complex no.

raheen
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[ sqrt(144)] = 12

raheen
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[sqrt( 144)] = 12 i

raheen
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the first one is real but the second is imaginary

yokie
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So [sqrt( 144)] must not be a real number?

penpen29
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\[\sqrt{144}=12\]\[\sqrt{144}=12i\]

raheen
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yes every sqrt(number) = imaginary number

penpen29
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if you will get the nth root of a number wherein n is even,the answer is an imaginary number

penpen29
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given that the number inside the radical is negative