计算题4(a-b)²-(2a+b)(-b+2a)(x+2y-6)(x-2y+6)999²-1002×9982011+2011²-2012²(2+1)(2²+1)·…·(2的三十二次方+1)分解因式(x+3)(x+2)+x²-9(x-y)³+9(x-y)-6(x-y)²2(a²-2a+1)-b(a-1)(a²+b²-c²
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![计算题4(a-b)²-(2a+b)(-b+2a)(x+2y-6)(x-2y+6)999²-1002×9982011+2011²-2012²(2+1)(2²+1)·…·(2的三十二次方+1)分解因式(x+3)(x+2)+x²-9(x-y)³+9(x-y)-6(x-y)²2(a²-2a+1)-b(a-1)(a²+b²-c²](/uploads/image/z/620392-40-2.jpg?t=%E8%AE%A1%E7%AE%97%E9%A2%984%28a-b%29%26%23178%3B-%282a%2Bb%29%28-b%2B2a%29%28x%2B2y-6%29%28x-2y%2B6%29999%26%23178%3B-1002%C3%979982011%2B2011%26%23178%3B-2012%26%23178%3B%282%2B1%29%282%26%23178%3B%2B1%29%C2%B7%E2%80%A6%C2%B7%282%E7%9A%84%E4%B8%89%E5%8D%81%E4%BA%8C%E6%AC%A1%E6%96%B9%2B1%29%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%28x%2B3%29%28x%2B2%29%2Bx%26%23178%3B-9%28x-y%29%26%23179%3B%2B9%28x-y%29-6%28x-y%29%26%23178%3B2%28a%26%23178%3B-2a%2B1%29-b%28a-1%29%28a%26%23178%3B%2Bb%26%23178%3B-c%26%23178)
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