已知m²+m-1=0求代数式m²+2m²+2006的值
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![已知m²+m-1=0求代数式m²+2m²+2006的值](/uploads/image/z/12528079-7-9.jpg?t=%E5%B7%B2%E7%9F%A5m%26%23178%3B%2Bm-1%3D0%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8Fm%26%23178%3B%2B2m%26%23178%3B%2B2006%E7%9A%84%E5%80%BC)
已知m²+m-1=0求代数式m²+2m²+2006的值
已知m²+m-1=0求代数式m²+2m²+2006的值
已知m²+m-1=0求代数式m²+2m²+2006的值
题目错了吧 怎么有2个平方而没有合并啊?应该是m³+2m²+2006
m³+2m²+2006
=m(m²+m-1)+m²+m+2006
=m*0+(m²+m-1)+2007
=0+0+2007
=2007.