Question

When writing of the sqrt of -13 is the negative sign placed under the radicand or outside of it?

Answer 1

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

Answer 2

13i

Answer 3

neither, replace the neg sign with an "i" on outside :)

Answer 4

\[\sqrt{-a} =i \sqrt{a} , a \ge 0\]

Answer 5

I am not doing complex numbers yet... so I don't think I can use i

Answer 6

in that case...its No real solution and it doesn't matter, leave the neg inside.
sqrt(-13)

Answer 7

\[\sqrt{-13} \ne -\sqrt{13}\]

Answer 8

am solving x^2+10x+38 =0... so I say it has no real soln's?

Answer 9

correct

Answer 10

no real solution if b^2-4ac<0

Answer 11

at what point do I say that at the end or as soon as I come across sqrt{-13}

Answer 12

as soon as you come across it...whenever discriminant is negative
like myininaya said

Answer 13

okay, thank you all so much!!