Question

Simplify radical. Check my answer?

Answer 1

\[\sqrt{-121}\]

Answer 2

My answer: 11

Answer 3

Are you allowed to take the square root of a negative number?

Answer 4

Yeah

Answer 5

11i where i = square root of -1

Answer 6

You can only take the square root of a negative number if you are working with complex functions.

Answer 7

is it -11 then?

Answer 8

It's not 11 nor is it -11.

Answer 9

The square root of a negative number is not defined for real numbers.

Answer 10

11i?

Answer 11

Yes, but that's only if you are working with complex numbers.

Answer 12

Do you know what i means?

Answer 13

yeah, thanks! Can you check another answer for me?

Answer 14

\[\sqrt{-48}\]

Answer 15

simplify^^ My answer \[4i \sqrt{3}\]

Answer 16

Very good.