Question

URGENT !
Descompuneti in factori ireductibili expresia: 
  x^{4} [/tex] - $x^{2}$ + 1

Answer 1

$x^{4}- x^{2} +1= x^{4}+2 x^{2} +1-3 x^{2} = (x^{2} +1)^{2} -3 x^{2} = \\ \\ =\boxed{ (x^{2} +1+x \sqrt{3})( x^{2} +1- x\sqrt{3})  }.$