1/2x^2-1=0

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Solution for 1/2x^2-1=0 equation: 


x in (-oo:+oo)

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

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

x^2 = 2

x^2 = 2 // ^ 1/2

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

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

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

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