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![我们数学班的一些分解因式提高题 谁能帮我讲讲啊X²-3x-4y²+6y²a³+5a-5-a²7ma-20ab-5mb+28nax³-2xy-x²-y²(z²-x²-y²)²-4x²y²x²-6xy-2x+6y+9y²m²-2mn+4n-4m+](/uploads/image/z/10347253-61-3.jpg?t=%E6%88%91%E4%BB%AC%E6%95%B0%E5%AD%A6%E7%8F%AD%E7%9A%84%E4%B8%80%E4%BA%9B%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%E6%8F%90%E9%AB%98%E9%A2%98+%E8%B0%81%E8%83%BD%E5%B8%AE%E6%88%91%E8%AE%B2%E8%AE%B2%E5%95%8AX%26%23178%3B-3x-4y%26%23178%3B%2B6y%26%23178%3Ba%26%23179%3B%2B5a-5-a%26%23178%3B7ma-20ab-5mb%2B28nax%26%23179%3B-2xy-x%26%23178%3B-y%26%23178%3B%28z%26%23178%3B-x%26%23178%3B-y%26%23178%3B%29%26%23178%3B-4x%26%23178%3By%26%23178%3Bx%26%23178%3B-6xy-2x%2B6y%2B9y%26%23178%3Bm%26%23178%3B-2mn%2B4n-4m%2B)
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