(x方-1分之x方-2x+1)除以(x+1分之2x-1)·(x分之x方+x)

问题描述:

(x方-1分之x方-2x+1)除以(x+1分之2x-1)·(x分之x方+x)

原式=(x-1)²/(x+1)(x-1) ÷(2x-1)/(x+1) 8*x(x+1)/x
=(x-1)÷(2x-1)*(x+1)
=(x²-1)/(2x-1)
如果本题有什么不明白可以追问,