因式分解:-2m^3+16m^2+18m=

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因式分解:-2m^3+16m^2+18m=

-2m^3+16m^2+18m
=-2m(m^2-8m-9)
=-2m(m-9)(m+1)

-2m³+16m²+18m
=-2m(m²-8m-9)
=-2m(m-9)(m+1)

= -2m(m^2-8m-9)
= -2m(m-9)(m+1)

-2m(m+1)(m-9)=0 所以m=0,m=-1或m=9

=-2m(m-9)(m+1)