m²-5m-6=0
(m-6)(m+1)=0
所以 m=6或m=-1
当m=6时
2m²-5m+36/m²
=2×6²-5×6+36/6²
=72-30+1
=43
当m=-1时
2m²-5m+36/m²
=2×(-1)²-5×(-1)+36/(-1)²
=2+5+36
=43
所以2m²-5m+36/m²的值为43
希望对你帮助
m²-5m-6=0
(m-6)(m+1)=0
所以 m=6或m=-1
当m=6时
2m²-5m+36/m²
=2×6²-5×6+36/6²
=72-30+1
=43
当m=-1时
2m²-5m+36/m²
=2×(-1)²-5×(-1)+36/(-1)²
=2+5+36
=43
所以2m²-5m+36/m²的值为43
希望对你帮助