Bài 1: tính nhẩm a) 26 mũ 2+52.24+24 mũ 2 b) 3003 mũ 2-3 mũ 2 Bài 2: phân tích đa thức thành nhân tử a) 5x-10xy b) 7a mũ 3. m mũ 2-5a mũ 2. m mũ 3+4am c) 18x mũ 5 y mũ 4 z mũ 3+ 24x mũ 4 y mũ 6 z mũ 2-12x mũ 7.y mũ 3 hộ mình với mình cần gấp

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