Because X+ 1/X=3, both sides are simultaneously squared (X+ 1/X)2=9.

Complete square formula expansion X2+2+ 1/X2=9.

So X2+ 1/X2=7.

So x2/x4+x2+1=1x2+x2+1= 7+1= 8.

2. Multiply this formula by (3- 1) and divide it by (3- 1).

Because (3- 1) (3+1)(3 squared+1)(3 to the 4th power+1)(3 to the 8th power+1).

= (square of 3-1) (square of 3+1) (fourth power of 3+1) (eighth power of 3+1)

= (4 of 3-1) (4 of 3+1) (8 of 3+1)

= (8 power of 3-1) (8 power of 3+1)

16 power =3-1

Divided by (3- 1) is 2, so the original formula =(3 to the 65438th power +06-1)/2.