因式分解:X的三次方-X的平方-X+1

急需啊!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

第1个回答  2011-05-03
=x(X的平方-1)-(X的平方-1)
=(x-1)(x-1)(x+1)本回答被提问者采纳
第2个回答  2011-05-03
x^3-x^2-x+1
=x^2(x-1)-(x-1)
=(x-1)(x^2-1)
=(x-1)(x-1)(x+1)
第3个回答  2011-05-03
X³-X²-X+1
=(X³-X²)-(X-1)
=X(X²-1)-(X-1)
=X(X-1)(X+1)-(X-1)
=(X-1)(X²+X-1)
第4个回答  2011-05-03
x^3-x^2-x+1
=x(x^2-1)-(x^2-1)
=(x^2-1)(x-1)
=(x-1)(x-1)(x+1
第5个回答  2011-05-03
x^3-x^2-x+1
=x^2(x-1)-(x-1)
=(x-1)(x^2-1)
=(x-1)(x+1)(x-1)
=(x+1)(x-1)^2