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x³ + 2x² + x = 0
x(x² + 2x + 1) = 0
x(x + 1)² = 0
x = 0 ∨ x = - 1
2x³ - 12x² + 18x = 0
2x(x² - 6x + 9) = 0
x(x - 3)² = 0
x = 0 ∨ x = 3
jak masz pytania to pisz na pw