If the conjugate complex number of Z + Z = 4 and the conjugate complex number of Z * z = 8, then the conjugate complex number of Z / Z is equal to? Detailed point answer, thank you

Z = a + bi, conjugate = a-bi
2a=4,a=2
(a+bi)(a-bi)=a^2+b^2=8
B ^ 2 = 4, B = 2, or - 2
Z = 2 + 2I, conjugate = 2-2i
Z = 2-2i, conjugate = 2 + 2I

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