Question

x+iy=(1+i) +(2+i)+(3+i)+_______________(50 term) x-y=?

Answer 1

separate real and imaginary numbers
first take i
We have 50 i
Then add 1+2+.....50
use n(n+1)/2
50*51/2
25*51
1275
comparing we get
x=1275
y=50
x-y=1275-50
=1225
Hope it helps
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