Question

If x +1/x=-1 then the value of x8 + 2x6 + x4 is

Answer 1

evolute. [{23-(-19)}÷21+{-6-)-4)}]*19

Answer 2

Answer:

answer is zero.. plz mark me brainliest

Step-by-step explanation:

x^4( x^4 +2 x^2 +1)

x^4 ( -x)*(-x)

x^6

But given is x^2 = -1-x

x^6 = -(1+x)^3

-x^3 -1-3x(1+x)

-x^3 -1 + 3x^3

2x^3 -1

2(-x-x^2) -1

-2x-2x^2 -1

-2x^2 + 2x^2 = 0