(X-1)平方-(X-1-6)=0

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(X-1)平方-(X-1-6)=0(X-1)平方-(X-1-6)=0(X-1)平方-(X-1-6)=0(X-1)平方-(X-1-6)=0可化为:(X-1)平方-(X-1)+6=0,令x-1=t,则:t

(X-1)平方-(X-1-6)=0
(X-1)平方-(X-1-6)=0

(X-1)平方-(X-1-6)=0
(X-1)平方-(X-1-6)=0可化为:(X-1)平方-(X-1)+6=0,
令x-1=t,则:t^2-t+6=0,因为判别式=1-24