1/2x^2+4=42

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Solution for 1/2x^2+4=42 equation: 


x in (-oo:+oo)

(1/2)*x^2+4 = 42 // - 42

(1/2)*x^2-42+4 = 0

1/2*x^2 = 38 // : 1/2

x^2 = 76

x^2 = 76 // ^ 1/2

abs(x) = 2*19^(1/2)

x = 2*19^(1/2) or x = -(2*19^(1/2))

x in { 2*19^(1/2), -(2*19^(1/2)) }

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