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descompunand in factori x4 - x2 + 1 se obtine?

Răspuns :

x⁴ -x²+1= x⁴ +2x² +1 -3x² =(  x²  + 1)² - 3 x² = (x² +1)² - ( √3x)²=
= ( x² +√3x +1) ( x² - √3x +1)
x⁴ -x²+1= x⁴ +2x² +1 -3x² =( x² + 1)² - 3 x² = (x² +1)² - ( √3x)²