x2+5xy+30y=x(x+5y)+30y
=6x+30y
=6(x+5y)
=36
4x3+2xy（x+y）+y3=2x2(2x+y)+y2(2x+y)
=0
m3+2m2=2008=m3+m2-m+m2+m-1+2009
=m(m2+m-1)+(m2+m-1)+2009
=2009