Mark the Correct alternative in the following:
If 
then possible value of 
is
Square both sides
a + ib = (x + iy)2 = x2 + i2xy -y2
So, we can say that a = x2 – y2 and b = 2xy
a – ib = (x2 – y2) – i(2xy)
= (x)2 + 2(x)(-iy) + (-iy)2
= (x + (-iy))2
= (x – iy)2
1