SOLUTION: SOlve by completing the square : W squared - 4W = 17

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Question 1392: SOlve by completing the square : W squared - 4W = 17
Answer by usyim88hk(158) About Me  (Show Source):
You can put this solution on YOUR website!
w^2-4w=17
w^2-4w+(-4/2)^2 = 17+(-4/2)^2
w^2-4w+4 = 21
(w-2)^2 = 21
w-2+=+sqrt%2821%29
w+=+sqrt%2821%29%2B2