If x+iy = root [(a+ib)/(c+id)], then (x^2+y^2)^2 is equal to (a^2+b^2)/(c^2+d^2) If x+iy = root [(a+ib)/(c+id)] then (x^2+y^2)^2 is equal to (a^2+b^2)/(c^2+d^2) October 24, 2021 Category: Chapter 5 - Complex Numbers and Quadratic Equations , Maths , NCERT Exemplar Class 11 ,