因式分解 (1)9(a-b)²-16(a+b)² (2)3x³-12x²y因式分解 (1)9(a-b)²-16(a+b)² (2)3x³-12x²y+12xy² (3)x(x+y)(x-y)-x(x+y)² (4)2x³-8x (5)4aX²-ay² (6)4y²-4x²y-y
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![因式分解 (1)9(a-b)²-16(a+b)² (2)3x³-12x²y因式分解 (1)9(a-b)²-16(a+b)² (2)3x³-12x²y+12xy² (3)x(x+y)(x-y)-x(x+y)² (4)2x³-8x (5)4aX²-ay² (6)4y²-4x²y-y](/uploads/image/z/1239806-38-6.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3+%EF%BC%881%EF%BC%899%EF%BC%88a-b%EF%BC%89%26%23178%3B-16%28a%2Bb%29%26%23178%3B+%282%293x%26%23179%3B-12x%26%23178%3By%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3+%EF%BC%881%EF%BC%899%EF%BC%88a-b%EF%BC%89%26%23178%3B-16%28a%2Bb%29%26%23178%3B+%282%293x%26%23179%3B-12x%26%23178%3By%2B12xy%26%23178%3B+%283%29x%28x%2By%29%28x-y%29-x%28x%2By%29%26%23178%3B+%284%292x%26%23179%3B-8x+%285%294aX%26%23178%3B-ay%26%23178%3B+%286%294y%26%23178%3B-4x%26%23178%3By-y%26%2317)
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