Question

Simplify. Square root -25 plz help

Answer 1

5i

Answer 2

Can u show me how u got that plz?

Answer 3

\[\sqrt{-25} = \sqrt{25}\sqrt{-1} = 5 \times i\]
where i = \[\sqrt{-1}\]

Answer 4

Ok so the answer is 5i?

Answer 5

I believe so..

Answer 6

Ok thank you

Answer 7

basically we're having to use imaginary numbers to describe the negative root, as an equation containing this expression has no real solution. Please see http://en.wikipedia.org/wiki/Complex_number for more information

Answer 8

\[\sqrt{-25}= \sqrt{25(-1)}= \sqrt{25i^2}= \sqrt{(5i)^2}=5i \]