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what is 2x to the second power equals 54

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PLEASE USE PARENTHESES !!!!
if
2 x^2 = 54
x^2 = 27
x = +/- 3 sqrt 3

but if
(2x)^2 = 54
4 x^2 = 54
x^2 = 13.5
x = +/- sqrt 13.5

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