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Let z be a complex number such that the ...

Let z be a complex number such that the imaginary part of z is nonzero and a = z2 + z + 1 is real. Then a cannot take the value (A) –1 (B) 1 3 (C) 1 2 (D) 3 4

A

`-1`

B

`1/3`

C

`1/2`

D

`3/4`

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