SOLUTION: Could someone help me work out the problem step by step. I do not understand. w^2+49=0 Thank you!

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Question 387024: Could someone help me work out the problem step by step. I do not understand.
w^2+49=0
Thank you!
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
w^2 = -49

w = 7i or w = -7i