(3x)2-10/4=56

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Solution for (3x)2-10/4=56 equation: 


x in (-oo:+oo)

(3*x)^2-(10/4) = 56 // - 56

(3*x)^2-(10/4)-56 = 0

(3*x)^2-5/2-56 = 0

9*x^2 = 117/2 // : 9

x^2 = 13/2

x^2 = 13/2 // ^ 1/2

abs(x) = (13/2)^(1/2)

x = (13/2)^(1/2) or x = -(13/2)^(1/2)

x in { (13/2)^(1/2), -(13/2)^(1/2) }

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