81/25=X2

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Solution for 81/25=X2 equation: 


X in (-oo:+oo)

81/25 = X^2 // - X^2

81/25-X^2 = 0

-1*X^2 = -81/25 // : -1

X^2 = 81/25

X^2 = 81/25 // ^ 1/2

abs(X) = 9/5

X = 9/5 or X = -9/5

X in { 9/5, -9/5 }

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