已知x눀-x-1=0,求代数式-x三次方+2x눀+2002的值

2025-01-08 02:44:39
推荐回答(1个)
回答1:

x²-x-1=0
x²-x=1

-x三次方+2x²+2002
=-x(x²-x-x)+2002
=-x(1-x)+2002
=x²-x+2002
=1+2002
=2003