发布网友 发布时间:2024-05-28 21:16
共2个回答
热心网友 时间:2024-06-03 01:06
x3-x2-x+1 = x^3 - x -(x^2 -1) = x(x^2 - 1) - (x^2 - 1) = (x - 1)(x^2 - 1) = (x-1)(x-1)(x+1)=(x+1)(x-1)^2热心网友 时间:2024-06-03 01:08
原式=(x3-x2)-(x-1)=x2(x-1)-(x-1)=(x-1)(x2-1)=(x-1)(x+1)(x-1)=(x+1)(x-1)2