Разложить на множители x^6-x^4-x^2+1
X^6 - x^4 - x² + 1 = x^4 (x² - 1) - (x² - 1) = (x^4 - 1) (x² - 1) = (x² - 1) (x² + 1)(x² - 1) = (x - 1)(x + 1)(x² + 1)(x - 1)(x + 1) = (x² + 1)(x - 1)²(x + 1)²
Х⁶⁶ - х⁴ - х² + 1 = х⁶ - х⁴ - (х² - 1) = х⁴(х² - 1) - (х² - 1) = (х² - 1)(х⁴ - 1) = = (х - 1)(х + 1)(х² - 1)(х² + 1) = (х - 1)(х + 1) (х - 1)(х + 1)(х² + 1) = = (х - 1)²(х + 1)²(х² + 1)