For \(z = -3 + 5i\), evaluate \( z \overline{z}.\)
Note: \(\overline{z}\) denotes the conjugate of \( z.\)
Thank you!!
To find the conjugate of a z just change the sign of the imaginary part
(-3+5i)(-3-5i) = 9 + 15i -15i- 25i2
= 9 - 25(-1) = 9+25 = 34
