1. Add: 5x2 - 3x - 1 and 4x2 - 2x + 8 2. Simplify: 9x2 -2x + 6 - (4x2 - 5x - 4) 3. Multiply: (-6x2yz3)(4xy4z5) 4. Multiply: (-2xy)(3x2y - 7xy5) 5. Multiply: (x - 3y)(4x - 2y) 6. Multiply: (x + 4y)(x - 5y)		7. Perform the indicated operation: (x - 2y)2 8. Subtract: 4x2- 3x + 6 from 7x2 - 2x -1 9. Subtract: 2x - 6 from 5x + 4 10. Subtract: x - 6 from x - 8 11. Simplify: 8x2 + x - 2 - (3x2 + 5x + 4) 12. Subtract x + 5 from x + 8

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