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arg (z) + arg is …………….

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Multiplicative inverse of 1 + i is ………………..

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If z₁ and z₂ are complex numbers such that z₁ + z₂ is a real number, then z₂ = ……..

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If |z + 4| ≤ 3, then the greatest and least values of |z + 1| are ……… and …….

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If then the locus of z is ………….