Question

How to solve this complex formula

(x+iy)(x-iy)

Answer 1

(X+iy)(X+iy)

=Xsquare -iy sqyare i.e X^2-iy^2

Hope it helped pls mark as brainliest

Answer 2

Hi....

HERE IS YOUR ANSWER:

$\boxed{(a+b)(a-b)= {a}^{2} - {b}^{2} }$

(x+iy)(x-iy) = ${x}^{2} - {(iy)}^{2}$


(${i}^{2} = - 1$)


= ${x}^{2} + {y}^{2}$

:)