talk:>>481
ak(k+1)(k+2)(k+3)(k+4)(k+5)(k+6)+bk(k+1)(k+2)(k+3)(k+4)(k+5)+ck(k+1)(k+2)(k+3)(k+4)+dk(k+1)(k+2)(k+3)+ek(k+1)(k+2)+fk(k+1)+gk+h
=ak^7+(21a+b)k^6+(175a+15b+c)k^5+(735a+85b+10c+d)k^4+(1624a+225b+35c+6d+e)k^3+(1764a+274b+50c+11d+3e+f)k^2+(720a+120b+24c+6d+2e+f+g)k
=k^7+k^5
を満たすa,b,c,d,e,f,g,hを求める以外の方法はあるのか？