SOLUTION: Hi I need help on understanding this problem: give exact and approximate solutions. (x-5)^2=18

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Question 266884: Hi I need help on understanding this problem:
give exact and approximate solutions.
(x-5)^2=18
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
give exact and approximate solutions.
(x-5)^2=18
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Exact Solutions:
(x-5)^2 - 18 = 0
Factor:
(x-5 - sqrt(18))(x-5 + sqrt(18)) = 0
x = 5+3sqrt(2) or x = 5 - 3sqrt(2)
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Approximate Solutions:
x = 5 + 4.2426.. or x = 5 - 4.2426..
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x = 9.2426.. or x = 0.7574..
Cheers,
Stan H.