Question

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

Answer 1

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

Answer 2

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

Answer 3

[- sqrt(144)] = -12

Answer 4

[sqrt(- 144)] = 12 i

Answer 5

the first one is real but the second is imaginary

Answer 6

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

Answer 7

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

Answer 8

yes every sqrt(-number) = imaginary number

Answer 9

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

Answer 10

given that the number inside the radical is negative