Direction: Find all the roots of the given polynomial equation
1. x³ + 5x² + 2x - 8 = 0; one root is -4
2. x3 + 3x² - 4x - 12 = 0; one root is -3
3. x³ + 8x² + 9x - 18 = 0; one root is 1
4. x³ - 6x² + 3x + 10 = 0; one root is -1 5. x⁴ + x³ - 3x² - x + 2 = 0; 1 is a root of multiplicity 2
1. x³ + 5x² + 2x - 8 = 0; one root is -4
2. x3 + 3x² - 4x - 12 = 0; one root is -3
3. x³ + 8x² + 9x - 18 = 0; one root is 1
4. x³ - 6x² + 3x + 10 = 0; one root is -1 5. x⁴ + x³ - 3x² - x + 2 = 0; 1 is a root of multiplicity 2
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