x-1分之x的平方-x+1等于多少?

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x-1分之x的平方-x+1等于多少?
x-1分之x的平方-x+1等于多少?

x-1分之x的平方-x+1等于多少?
x^2/(x-1)-x+1
=x^2/(x-1)-(x^2-x)/(x-1)+(x-1)/(x-1)
=(x^2-x^2+x+x-1)/(x-1)
=(2x-1)/(x-1)
希望能对你有所帮助
有不会的可以继续问我

x-1分之(2x-1)

x^2/(x-1)-x+1
=x^2/(x-1)-(x-1)
=x^2/(x-1)-(x-1)^2/(x-1)
=(x^2-x^2+2x-1)/(x-1)
=(2x-1)/(x-1)
够详细了吧 - -