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Question

solve the equation where i represent iota and IzI is modulus of z which is a complex number.

IzI-z=1+2i

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Solution

Let z = x+iyNow, z = x2+y2Now, the given equation is, z = z+1+2ix2+y2 = x+iy + 1 + 2ix2+y2 = x+1 + iy+2Equating real parts both sides, we getx + 1 = x2+y2 x2+2x+1 = x2+y22x+1 = y2 .....1Equating imaginary parts both sides, we gety+2 = 0y=-2Now, from 1, we get2x + 1 = 4x = 32So, z = x+iy = 32-2i

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