1) 3A + 2 AB - 5 BC + 6B - 2 A + 1 AB - 4 BC - 4 B = a) 1 A + 3B + 9 BC + 2B b) 1A + 3 AB - 9 BC + 2B c) 1A - 3AB - 9 BC + 2B 2) ( 2B + 3AC - 4 A) x 2AB = a) 4A B 2 - 6 A 2 BC - 8 A 2 B b) 4A B 2 + 6 A 2 BC + 8 A 2 B c) 4A B 2 + 6 A 2 BC - 8 A 2 B 3) (4 A 4 B 2 C 3 + 6 A 3 B 4 C 4 + 8 A 6 B 6 C) : 2 A 2 B C = a) 2 A 2 B C 2 + 3 A B 3 C 3 + 4 A 4 B 5 b) 2 A 2 B C 2 - 3 A B 3 C 3 + 4 A 4 B 5 c) 2 A 2 B C 2 + 3 A B 3 C 3 - 4 A 4 B 5 4) ( 2 A 2 B + 3 A B 6 C - 4 ABC) x (-3 A 2 B 2 )= a) + 6 A 4 B 3 + 9 A 3 B 8 C - 12 A 3 B 3 C b) - 6 A 4 B 3 - 9 A 3 B 8 C + 12 A 3 B 3 C c) 6 A 4 B 3 - 9 A 3 B 8 C - 12 A 3 B 3 C 5) (12 A 6 B 4 C 3 + 3 A 3 B 5 C 4 + 18 A 6 B 6 C 4 ) : 3 A 2 B 3 C 3 = a) 4 A 4 B - 1 A B 2 C + 6 A 4 B 3 C b) 4 A 4 B + 1 A B 2 C - 6 A 4 B 3 C c) 4 A 4 B + 1 A B 2 C + 6 A 4 B 3 C 

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