SOLUTION: a solution of x/4^2=9

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Question 296918: a solution of x/4^2=9
Answer by dabanfield(803) About Me  (Show Source):
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a solution of x/4^2=9
(x/4)^2 = 9
x^2/4^2 = 9
x^2/16 = 9
x^2 = 144
x = sqrt(144) or x = -sqrt(144)
x = 12 or x = -12