If \[{{z}_{1}},{{z}_{2}}\] are the roots of the quadratic equation \[a{{z}^{2}}+bz+c=0\] such that \[\operatorname{Im}({{z}_{1}},{{z}_{2}})\ne 0\] then

at least one of a, b, c is real

at least one of a, b, c is imaginary

If \[{{z}_{1}},{{z}_{2}}\] are the roots of the quadratic equation \[a

1.	If \[{{z}_{1}},{{z}_{2}}\] are the roots of the quadratic equation \[a{{z}^{2}}+bz+c=0\] such that \[\operatorname{Im}({{z}_{1}},{{z}_{2}})\ne 0\] then
A.	a, b, c are all real
B.	at least one of a, b, c is real
C.	at least one of a, b, c is imaginary
D.	all of a, b, c are imaginary
Answer» D. all of a, b, c are imaginary

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If \[{{z}_{1}},{{z}_{2}}\] are the roots of the quadratic equation \[a{{z}^{2}}+bz+c=0\] such that \[\operatorname{Im}({{z}_{1}},{{z}_{2}})\ne 0\] then

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