Question

当x为何值时，（x²-x+1)/(x-2)-(x²-2x+5)/(x-1)的值为2

我懒得算了 要过程 谢谢、

Answer 1

上式=[(x²-x+1)*(x-1)-(x²-2x+5)*(x-2)]/(x-1)*(x-2)
=(2x²-7x+9)/(x²-3x+2)=2
x=5

追问

谢谢拉 我分给你