Question

X^4 - x^2 - 2x -1 . solve

Answer 1

X⁴–X²–2X –1=0

(X²+X+1)(X²–X–1)=0

`x = - (1 - i√(3) )/(2) \\ x = - ( 1 + i √(3) )/(2)`

`x = (1 + √(5) )/(2) \\ x = (1 - √(5) )/(2)`

I hope I helped you^_^