①a(a-1)-2=0②a(a²-1)-6≠0.求a
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①a(a-1)-2=0②a(a²-1)-6≠0.求a
①a(a-1)-2=0②a(a²-1)-6≠0.求a
①a(a-1)-2=0②a(a²-1)-6≠0.求a
a=2
a=-1吧
①a(a-1)-2=0②a(a²-1)-6≠0.求a
①a(a-1)-2=0②a(a²-1)-6≠0.求a
①a(a-1)-2=0②a(a²-1)-6≠0.求a
a=2
a=-1吧