If x-iy= √(a-ib)/(c-id), prove that (x^2+y^2)^2=(a^2+b^2)/(c^2+d^2) #modulus of complex numbers

If x-iy= √(a-ib)/(c-id), prove that (x^2+y^2)^2=(a^2+b^2)/(c^2+d^2) #modulus of complex numbers #Class 11 #Standard 11 #IITJEE