最好在23点以前~(最好有过程的!)1) 4a^2+2a-b-b^22) 2pq-p^2+1-q^23) x^2+2xy+y^2-3x-3y+2
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![最好在23点以前~(最好有过程的!)1) 4a^2+2a-b-b^22) 2pq-p^2+1-q^23) x^2+2xy+y^2-3x-3y+2](/uploads/image/z/5312710-46-0.jpg?t=%E6%9C%80%E5%A5%BD%E5%9C%A823%E7%82%B9%E4%BB%A5%E5%89%8D%EF%BD%9E%28%E6%9C%80%E5%A5%BD%E6%9C%89%E8%BF%87%E7%A8%8B%E7%9A%84%21%EF%BC%891%EF%BC%89+4a%5E2%2B2a-b-b%5E22%29+2pq-p%5E2%2B1-q%5E23%29+x%5E2%2B2xy%2By%5E2-3x-3y%2B2)
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