Question

if x3+1/x3=322 find x4+1/x4=?

Answer 1

Given x 4+1/x 4 = 322 x 4 + 1/ x 4 + 2 = 322+2 // add +2 on both side // x 4+ 1/ x 4 + 2 = 324 (x 2 + 1 /x 2) 2 = 18 2 // using the identit (a+b ) 2  ...