If z 2 + 1 z 2 = 18 , find the value of z 3 - 1 z 3 , using only the positive value of z - 1 z . Share with your friends Share 1 Sai Vignesh Follow Me @sigvins... answered this s4e5 0 View Full Answer Tanuj Chaudhary answered this (Z-1/Z)2=Z2+1/Z2-2 =18-2=16 16=(Z-1/Z)2 Z-1/Z=4 (Z-1/Z)3=Z3-1/Z3-3(4) 76=Z3-1/Z3 1
