SOLUTION: Why do we have to check the solutions when we solve radical equations?

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Question 350871: Why do we have to check the solutions when we solve radical equations?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
you need to check the solutions when you solve any equations, not just radical equations, to confirm that the solutions are good.

otherwise you have no way of knowing whether you did it right or not.