Question

if
$a + ib = 0$
then prove that


$a - ib = 0$

Answer 1

a+in=0 ...............given

we have to find, a- ib =0 .......1

therefore,

a=-ib ,

put it in equation1

-in +ib = o

hop you understand

Answer 2

its given that a+ib=0

Therefore a=-ib (putting this a value in proving part)

-ib-ib=0

-2ib=0

ib=0