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(x⁴ + x³ - x² - x³ - x² + x + x² + x - 1)(x - 2)
(x⁴ + 2x + x² - 1)(x - 2)
x⁵ - 2x⁴ + 2x² - 4x + x³ - 2x² - x + 2
x⁵ - 2x⁴ + x³ - 5x + 2