x^2/3-1=80

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Solution for x^2/3-1=80 equation: 


x in (-oo:+oo)

(x^2)/3-1 = 80 // - 80

(x^2)/3-80-1 = 0

1/3*x^2 = 81 // : 1/3

x^2 = 243

x^2 = 243 // ^ 1/2

abs(x) = 9*3^(1/2)

x = 9*3^(1/2) or x = -(9*3^(1/2))

x in { 9*3^(1/2), -(9*3^(1/2)) }

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