第1题:计算999...9(n个9) x 999..(n个9) + 199..9(n个9)第2题:分解因式(x-y)的2n+1次方 + 2(y-x)的2n次方 x (y-z) - (x-z)(x-y)的2n次方第3题 有一个正方体每个面都写着一个自然数,并且上下两数/左右两数/前后两
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![第1题:计算999...9(n个9) x 999..(n个9) + 199..9(n个9)第2题:分解因式(x-y)的2n+1次方 + 2(y-x)的2n次方 x (y-z) - (x-z)(x-y)的2n次方第3题 有一个正方体每个面都写着一个自然数,并且上下两数/左右两数/前后两](/uploads/image/z/13559821-61-1.jpg?t=%E7%AC%AC1%E9%A2%98%3A%E8%AE%A1%E7%AE%97999...9%28n%E4%B8%AA9%29+x+999..%28n%E4%B8%AA9%29+%2B+199..9%28n%E4%B8%AA9%29%E7%AC%AC2%E9%A2%98%3A%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%28x-y%29%E7%9A%842n%2B1%E6%AC%A1%E6%96%B9+%2B+2%28y-x%29%E7%9A%842n%E6%AC%A1%E6%96%B9+x+%28y-z%29+-+%28x-z%29%28x-y%29%E7%9A%842n%E6%AC%A1%E6%96%B9%E7%AC%AC3%E9%A2%98+%E6%9C%89%E4%B8%80%E4%B8%AA%E6%AD%A3%E6%96%B9%E4%BD%93%E6%AF%8F%E4%B8%AA%E9%9D%A2%E9%83%BD%E5%86%99%E7%9D%80%E4%B8%80%E4%B8%AA%E8%87%AA%E7%84%B6%E6%95%B0%2C%E5%B9%B6%E4%B8%94%E4%B8%8A%E4%B8%8B%E4%B8%A4%E6%95%B0%2F%E5%B7%A6%E5%8F%B3%E4%B8%A4%E6%95%B0%2F%E5%89%8D%E5%90%8E%E4%B8%A4)
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