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Simplify the following expression. (7x5 + 9x4 - 6x2 + 25) - (6x5 + 17x4 + 6x2 - 5) A. 13x5 - 8x4 + 12x2 - 30 B. x5 - 8x4 - 12x2 + 30 C. x5 + 8x4 + 12x2 - 30 D. 13x5 + 26x4 + 20

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Answer: (2x5 + 9x4 - 17x2 + 30) - (8x5 + 13x4 + 5x2 - 5). A. -6x5 + 4x4 + 22x2 - 35. B. 10x5 + 22x4 - 12x2 + 25 ... 3. Simplify: (3x - 9)(6x2 + 9x - 2) ... 5. Simplify the following expression. (7x2 + 6x - 3) - (4x2 + 7) ... Answers. 1. A 2. D 3. D 4. B 5. C 6. B 7. D 8. D 9. D 10. A ... + (-5)(6). = 12x3 + 6x2 + 18x - 20x2 - 10x - 30.

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