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1. Which of the following is not a factor of x³ + 8x² - x - 8?
A. (x + 8)
B. (x - 8)
C. (x + 1)
D. (x - 1)
2. One of the factors of -6x⁴y³ - 20xy is -2xy. What is the other factor?
A. -3x³y² + 10
B. -3x³y² - 10
C. 3x³y² + 10
D. 3x³y² - 10​