一道约分题(a-a^2-1)^2÷(a^2-a+1)要过程

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一道约分题(a-a^2-1)^2÷(a^2-a+1)要过程
一道约分题
(a-a^2-1)^2÷(a^2-a+1)要过程

一道约分题(a-a^2-1)^2÷(a^2-a+1)要过程
(a-a^2-1)^2÷(a^2-a+1)
=[-(a^2-a+1)]^2÷(a^2-a+1)
=(a^2-a+1)^2÷(a^2-a+1)
=a^2-a+1

(a-a^2-1)^2÷(a^2-a+1)
=[-(a^2-a+1)]^2÷(a^2-a+1)
=(a^2-a+1)^2÷(a^2-a+1)
=a^2-a+1

a-a^2-1)^2÷(a^2-a+1)
=[-(a^2-a+1)]^2÷(a^2-a+1)
=(a^2-a+1)^2÷(a^2-a+1)
=a^2-a+1

8/2=4