X^2=81/49

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Solution for X^2=81/49 equation: 


X in (-oo:+oo)

X^2 = 81/49 // - 81/49

X^2-(81/49) = 0

X^2-81/49 = 0

1*X^2 = 81/49 // : 1

X^2 = 81/49

X^2 = 81/49 // ^ 1/2

abs(X) = 9/7

X = 9/7 or X = -9/7

X in { 9/7, -9/7 }

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