Write the conjugate  of the complex number z. Then find z.z = 2 + 7i

A.  = 2 - 7i, z = 4 - 49i
B.  = 2 - 7i, z = 4 - 49i2
C.  = 2 - 7i, z = 53
D.  = 2 - 7i, z = -45


Answer: C

Mathematics

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