Question

if x+1/x=-1 find (x^3-1)​

Answer 1

Hope it will help you.........

Answer 2

x+1/x=-1,or x^2+x+1=0,or (x^2+2.1/2.x+1/4)+3/4=0,or (x+1/2)=-3/4,or x=-(√3+1)/2,or x^3-1 =(-(√3+1)/2)^3-1