1) If z = a+i, What is the complex conjugate of z? a)  ̅z = -a+i b) ̅z = a- i c) ̅z=-a-i 2) If ̅z = 4 - 5i, What is the imaginary part? a) -i b) -4 c) -5 d) 5 3) The complex conjugate of a real number is? a) 0 b) 1 c) 0i d) same number 4) If z = 1+2i, What is ̅z+z? a) 2 b) 1 c) 3 d) 0 5) What is the product of a complex number z = 5-2i and its conjugate? a) 24 b) 26 c) 29 d) 20

Conjugate of complex numbers

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