Question

Help me please! I'm stuck and I need the answer now! Thx so much!

Answer 1

If ,

$\bold{z=-3+5i }$

so,conjugate of z

$\overline{ z }$=$\bold{-3-5i }$

Because, in argand plane $\overline{ z }$ is the reflection of z in x-axis.

so,

According to the question,

z$\overline{z}$=(-3+5i)(-3-5i)

$\bold{(-3)^2-(5i)^2 }$

$\bold{9-25(-1) }$

$\bold{ 9+25 }$

$\bold{ 34 }$

Answer 2

Answer:

• 34

Step-by-step explanation:

Given

• z = -3 + 5i

Conjugate of z is:

• z' = -3 - 5i

Product zz' is:

• zz' = (-3 + 5i)(-3 - 5i) = (-3)² - (5i)² = 9 - 25(-1) = 9 + 25 = 34