Example 8 - If x + iy = , prove x2 + y2 = 1

,ooo 1= 42j >! : it 9i а- =-z iy 9i

Given z=x+iy Also given z+6=2z+3 or, +iy=+2iy or, √2+2=√2+2 or, 2+y2=2+4y2 or, 3x2+3y2=27 or, x2+y2=9

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