3/7-2x^2

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Solution for 3/7-2x^2 equation: 


x in (-oo:+oo)

3/7-(2*x^2) = 0

3/7-2*x^2 = 0

-2*x^2 = -3/7 // : -2

x^2 = 3/14

x^2 = 3/14 // ^ 1/2

abs(x) = (3/14)^(1/2)

x = (3/14)^(1/2) or x = -(3/14)^(1/2)

x in { (3/14)^(1/2), -(3/14)^(1/2) }

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