SOLUTION: how do I solve principal square root 9w+4 =w-2? I don't understand how to apply the 4 steps.

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Question 1002983: how do I solve principal square root 9w+4 =w-2? I don't understand how to apply the 4 steps.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
sq root of what?