Question

how do i find the square root of a negative number in terms of complex numbers. for example: sqrt(-64

Answer 1

if \(a>0\) then \(\sqrt{-a}=i\sqrt{a}\)

Example:

\[\sqrt{-4}=i\sqrt{4}=i*2=2i\]

Answer 2

so my answer would then be 8i?

Answer 3

correct

Answer 4

thatnk!

Answer 5

fo sure

Answer 6

thanks*

Answer 7

how do you type the square root symbol on the keyboard?