5x^2/4-4=16

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Solution for 5x^2/4-4=16 equation: 


x in (-oo:+oo)

(5*x^2)/4-4 = 16 // - 16

(5*x^2)/4-16-4 = 0

5/4*x^2 = 20 // : 5/4

x^2 = 16

x^2 = 16 // ^ 1/2

abs(x) = 4

x = 4 or x = -4

x in { 4, -4 }

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