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[" Let "z(0)" be a root of the quadratic...

[" Let "z_(0)" be a root of the quadratic equation,"x^(2)],[+x+1=0." If "z=3+6iz^(2)-3iz_(0)^(23)," then arg "z],[" is equal to: "]

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Let Z_0 is the root of equation x^2+x+1=0 and Z=3+6i(Z_0)^(81)-3i(Z_0)^(93) Then arg (Z) is equal to (a) (pi)/(4) (b) (pi)/(3) (c) pi (d) (pi)/(6)

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