Question

Challenge: If z is complex and |z| = 1, find |1+z|^2 + |1-z|^2

Answer 1

\[|z|=1\]
find \[|1+z|^{2}+|1-z|^2\]

Answer 2

Are you posing this question for people to solve? or is it one you need assistance solving?

Answer 3

im only asking because I dont want to ruin it for others if it the first option.

Answer 4

first one

Answer 5

I just did it and thought it was pretty cool

Answer 6

it is :)

Answer 7

Isnt it 4?

Answer 8

indeed it is

Answer 9

Do u want me to post the solution?

Answer 10

no, I know what it is