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solution.
1. 2ab (4a2 + 3ab - 762) 2. -3xy (x3y3 - 3x2y + 7xy2) 4. (2x - 1)(2x2 + 4x + 3) 25 a5b3c 6. 5ab4c 7. 16 a3b2c5 - 24 a5bc4 + 44 a7b6c6 4a2bc3​