已知m²-2m-2=0,求m³+m²-8m+2004的值
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因为m^2-2m-2-0
所以m^3-2m^2-2m=0
所以m^3+m^2-8m+2004
=m^3-2m^2-2m+2m^2+2m+m^2-8m-6+1998
=0+3m^2-6m-6+1998
=3(m^2-2m-2)+1998
=3*0+1998
=1998
所以m^3-2m^2-2m=0
所以m^3+m^2-8m+2004
=m^3-2m^2-2m+2m^2+2m+m^2-8m-6+1998
=0+3m^2-6m-6+1998
=3(m^2-2m-2)+1998
=3*0+1998
=1998
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m²-2m-2=0
m²-2m=2
m³+m²-8m+2004
=m³-2m²+3m²-8m+2004
=m(m²-2m)+3m²-8m+2004
=2m+3m²-8m+2004
=3m²-6m+2004
=3(m²-2m)+2004
=3*2+2004
=6+2004
=2010
m²-2m=2
m³+m²-8m+2004
=m³-2m²+3m²-8m+2004
=m(m²-2m)+3m²-8m+2004
=2m+3m²-8m+2004
=3m²-6m+2004
=3(m²-2m)+2004
=3*2+2004
=6+2004
=2010
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m²-2m-2=0
m³+m²-8m+2004=m(m²-2m-2+3m-6)+2004=3m²-6m+2004=3(m²-2m-2)+6+2004=2010
m³+m²-8m+2004=m(m²-2m-2+3m-6)+2004=3m²-6m+2004=3(m²-2m-2)+6+2004=2010
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m^2-2m-2=0
m^2-2m=2
m³+m²-8m+2001=m(m^2-2m)+3(m^2-2m)-2m+2001=2m+6-2m+2004=2010
m^2-2m=2
m³+m²-8m+2001=m(m^2-2m)+3(m^2-2m)-2m+2001=2m+6-2m+2004=2010
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m³+m²-8m+2004 =m³+m²-8m-6+2010=(m+3)(m²-2m-2)+2010 =2010
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