(6a2+12ab+6b2) + (18a5 x 5b4+24a3 b)
__________________________________
3a2+3b2 x 24a3 b
=
6(a2+2ab+b2) + (90a5b4+24a3 b)
__________________________________
3a2+72b3a3
=
6(a+b)2 +6a3b (15a2b3+4)
__________________________________
3a2( 1 + 24b3a)
=
2(a+b)2 +2a3b (15a2b3+4)
__________________________________
a2( 1 + 24b3a)
mehr ist wohl nicht drin.