(x^2-82)/9=2

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Solution for (x^2-82)/9=2 equation: 


x in (-oo:+oo)

(x^2-82)/9 = 2 // - 2

(x^2-82)/9-2 = 0

(x^2-82)/9+(-2*9)/9 = 0

x^2-2*9-82 = 0

x^2-100 = 0

(x^2-100)/9 = 0

(x^2-100)/9 = 0 // * 9

x^2-100 = 0

1*x^2 = 100 // : 1

x^2 = 100

x^2 = 100 // ^ 1/2

abs(x) = 10

x = 10 or x = -10

x in { 10, -10 }

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