已知X方-5X-2000=0,求(X-2)分之【(X-2)三次方-(X-1)方+1】的值

问题描述:

已知X方-5X-2000=0,求(X-2)分之【(X-2)三次方-(X-1)方+1】的值

(X-2)分之【(X-2)三次方-(X-1)方+1】
=【(X-2)三次方-(X-1+1)(x-1-1)】/(X-2)
=【(X-2)三次方-X(x-2)】/(X-2)
=(x-2)^2-1
=x^2-4x+4-x
=x^2-5x+4
=2000-4
=1996谢谢你能采纳