For all complex numbers z satisfying Im(z)≠0, if f(z)=z2+z+1 is a r – McqOptions

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1.	For all complex numbers z satisfying Im(z)≠0, if f(z)=z2+z+1 is a real valued function, then find its range.
A.	(-∞, -1]
B.	(-∞, 1/3)
C.	(-∞, 1/2]
D.	(-∞, 3/4)
Answer» E.

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