Question

A) if x+1/x = 8, find x2+1/x2 b) if x-1/x=3 find x2+1/x2 and x4+1/x4 c) if a+b=9, ab=3 find a2+b2 d) if a-b=8 , ab=7 find a2 + b2

Answer 1

here's ur answer in the attached picture