m,n是方程x05-2011x-1=0的两个实数根,则m05n+mn05-mn的值是题目错了,应该是 m,n是方程x²-2011x-1=0的两个实数根,则m²n+mn²-mn的值是?
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![m,n是方程x05-2011x-1=0的两个实数根,则m05n+mn05-mn的值是题目错了,应该是 m,n是方程x²-2011x-1=0的两个实数根,则m²n+mn²-mn的值是?](/uploads/image/z/1658601-9-1.jpg?t=m%2Cn%E6%98%AF%E6%96%B9%E7%A8%8Bx05-2011x-1%3D0%E7%9A%84%E4%B8%A4%E4%B8%AA%E5%AE%9E%E6%95%B0%E6%A0%B9%2C%E5%88%99m05n%2Bmn05-mn%E7%9A%84%E5%80%BC%E6%98%AF%E9%A2%98%E7%9B%AE%E9%94%99%E4%BA%86%EF%BC%8C%E5%BA%94%E8%AF%A5%E6%98%AF++m%2Cn%E6%98%AF%E6%96%B9%E7%A8%8Bx%26%23178%3B-2011x-1%3D0%E7%9A%84%E4%B8%A4%E4%B8%AA%E5%AE%9E%E6%95%B0%E6%A0%B9%2C%E5%88%99m%26%23178%3Bn%2Bmn%26%23178%3B-mn%E7%9A%84%E5%80%BC%E6%98%AF%EF%BC%9F)
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m,n是方程x05-2011x-1=0的两个实数根,则m05n+mn05-mn的值是题目错了,应该是 m,n是方程x²-2011x-1=0的两个实数根,则m²n+mn²-mn的值是?
m,n是方程x05-2011x-1=0的两个实数根,则m05n+mn05-mn的值是
题目错了,应该是 m,n是方程x²-2011x-1=0的两个实数根,则m²n+mn²-mn的值是?
m,n是方程x05-2011x-1=0的两个实数根,则m05n+mn05-mn的值是题目错了,应该是 m,n是方程x²-2011x-1=0的两个实数根,则m²n+mn²-mn的值是?
m+n=2011
mn=-1
(m²)n+m(n²)-mn
=mn(m+n-1)
=-1(2011-1)
=-2010
所以m²n+mn²-mn的值是-2010.