m2+5m+1=0
m2+5m=-1
m²+1=-5m
2m²+5m+1/m²
=m²+5m+m²+1/m²
=-1+(m²+2+1/m²)-2
=(m+1/m)²-3
=[(m²+1)/m]²-3
=(-5m/m)²-3
=25-3
=22