1/2x^2-8

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Solution for 1/2x^2-8 equation: 


x in (-oo:+oo)

(1/2)*x^2-8 = 0

1/2*x^2 = 8 // : 1/2

x^2 = 16

x^2 = 16 // ^ 1/2

abs(x) = 4

x = 4 or x = -4

x in { 4, -4 }

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