x平方-x-1=0,那么-x立方+2x平方+2002等于多少?
x平方-x-1=0,那么-x立方+2x平方+2002等于多少?
如题如题
倒
如题如题
倒
数学人气:579 ℃时间:2020-04-15 01:22:09
优质解答
由x的平方-x-1=0得x不等于0,x代入上式中得到x的立方-x=-x再将其代入x的立方-2x的平方+2002中此式结果2003
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