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第一種情况,k=0,它是一元一次方程,lz應該會解第二種韋達定理:x1+x2=-(k+1)/k①x1*x2=(k-1)/k②①+②得x1+x2+x1x2=(-2)/kx1+x2+x1x2+1=(-2)/k+1(x1+1)(x2+1)=(-2)/k+1因為x1,x2都是整數,所以(-2)/k+1是整數所以k=…
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