SOLUTION: sqrt (z)= -1 please help

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Question 26198: sqrt (z)= -1
please help
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%28z%29+=+-1

so, opposite of a square root is "squaring", so square both sides:

z+=+%28-1%29%5E2
--> z = +1

jon.