ans . of 5th is 0

n for 2nd multiple ans.

 

let the root b z1 , z2 , z3

z1z2z3 = - c

taking mod

[z1][z2][z3] = [-c]                                 {[z1] = [z2] = [z3] = 1}

.'. [-c] = 1

 

 or [c] = 1

 

for  1st

[z+1+ i] <= 1

it represents a circle passing through (-1,-1)

or it's general eqn.

x^2 + y^2 + 2x+ 2y + 1 = 0

n

[z - i] 

represents a circle passing through (0,1}

so max value is  =

     1+   5

coz it cut s at two points n  it  pass through two points

 

 

plz rate if i m right