SOLUTION: How do you simplify the square root of -225. The problem is written as (-) sign then the square root symbol with the number inside.

Algebra ->  Square-cubic-other-roots -> SOLUTION: How do you simplify the square root of -225. The problem is written as (-) sign then the square root symbol with the number inside.      Log On


   

Question 369241: How do you simplify the square root of -225. The problem is written as (-) sign then the square root symbol with the number inside.
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%28-225%29+=+sqrt%28-1%2A225%29+=+sqrt%28-1%29%2Asqrt%28225%29+=+15i, where i is called the imaginary unit, i+=+sqrt%28-1%29.