x^2/81-6=-2

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Solution for x^2/81-6=-2 equation: 


x in (-oo:+oo)

(x^2)/81-6 = -2 // + 2

(x^2)/81-6+2 = 0

1/81*x^2 = 4 // : 1/81

x^2 = 324

x^2 = 324 // ^ 1/2

abs(x) = 18

x = 18 or x = -18

x in { 18, -18 }

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