Question

m的平方加上m等于1,求m的次方加上2乘以m的平方加上2008

Answer 1

m²+m=1,

则m³+2m²+2008=m(m²+2m)+2008=m(m²+m+m)+2008

=m(m+1)+2008=m²+m+2008=1+2008=2009