Question

If u = 1 + i and v = 1 – i, what is u + v?
a)2
b)0
c)-2i
d)-2
e)2i

Answer 1

@Michele_Laino

Answer 2

c?

Answer 3

here are some steps:
\[\Large \begin{gathered}
u + v = \left( {1 + i} \right) + \left( {1 - i} \right) = 1 + i + 1 - i = \hfill \\
\hfill \\
= \left( {1 + 1} \right) + i\left( {1 - 1} \right) = ...? \hfill \\
\end{gathered} \]

Answer 4

option C) is a wrong option

Answer 5

yes i know i got it thank you :)

Answer 6

:)