u^2=-2/3

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Solution for u^2=-2/3 equation: 


u in (-oo:+oo)

u^2 = -2/3 // + -2/3

u^2-(-2/3) = 0

u^2+2/3 = 0

1*u^2 = -2/3 // : 1

u^2 = -2/3

u belongs to the empty set

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