ax²-(4a+1)x+3a+1
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ax²-(4a+1)x+3a+1ax²-(4a+1)x+3a+1ax²-(4a+1)x+3a+1ax²-(4a+1)x+3a+1=(ax-3a-1)(x-1)3
ax²-(4a+1)x+3a+1
ax²-(4a+1)x+3a+1
ax²-(4a+1)x+3a+1
ax²-(4a+1)x+3a+1=(ax-3a-1)(x-1)3a+1,即a(3a+1)/a或x