Question

If 21+ (x + y ) = 6, what is x + yı?OA.-6 + 2;B.-6 - 2iO C.6 + 2iOD.6-2iO E.6x-2i

Answer 1

You have the following expression:

$2i+(x+yi)=6$

in order to determine the value of x + yi, subtract 2i both sides of the previous equation:

$\begin{gathered} 2i-2i+(x+yi)=6-2i \\ x+yi=6-2i \end{gathered}$

Hence, x+ yi is equal to 6 - 2i