Question

if (x+1/x)2 =3 find the value of x72+x66+x54+x48+x18+x12+x6+1

Answer 1

add the all given values 72x+66x.............+1
=276+1
(x+1/x)2=3
(x+1/x)=3/2
3x=2x+2
x=2
276×2+1
553