You can use the COMPLEX function is excel to convert this (x,y) in (x+yj) form
Real_num is the real coefficient of the complex number.
I_num is the imaginary coefficient of the complex number.
Suffix is the suffix for the imaginary component of the complex number. If omitted, suffix is assumed to be "i".
So in our case suppose we have the x data in E4 and y data in G4, we will have to use
this will give the result as
to get it into that format, ROUND is needed since complex function by default converts data into 15 decimal places and that does not look good.
If you do not want even those 2 intermediary columns for x and y , you can use
but that becomes a bit complicated.
Also, once you convert into complex , you will need to use complex number functions to get real (x) and imaginary (y) part from that value or to perform any further calculation
Hope that helps.