Question

Simplify the number using the imaginary unit i.

radical -144

A. 12
B. -12
C. 12i
D. 144i

Answer 1

looks like this\[\sqrt{-144}\]

Answer 2

D

Answer 3

\[i=\sqrt{-1}\]

Answer 4

oh wait that makes it C actually

Answer 5

\[\Large \sqrt{-1*12^2} = 12\sqrt{-1}=12i\]

Answer 6

Thank you very much.