x^2+(-12/5x)^2=9

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Solution for x^2+(-12/5x)^2=9 equation: 


x in (-oo:+oo)

x^2+((-12/5)*x)^2 = 9 // - 9

x^2+((-12/5)*x)^2-9 = 0

169/25*x^2 = 9 // : 169/25

x^2 = 225/169

x^2 = 225/169 // ^ 1/2

abs(x) = 15/13

x = 15/13 or x = -15/13

x in { 15/13, -15/13 }

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