c^2-1/81=0

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Solution for c^2-1/81=0 equation: 


c in (-oo:+oo)

c^2-(1/81) = 0

c^2-1/81 = 0

1*c^2 = 1/81 // : 1

c^2 = 1/81

c^2 = 1/81 // ^ 1/2

abs(c) = 1/9

c = 1/9 or c = -1/9

c in { 1/9, -1/9 }

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