1)а^9+3a^6b^3+3a^3b^6+b^9-(a^9-3a^6b^3+3a^3b^6-b^9)-2b
а^9+3a^6b^3+3a^3b^6+b^9-a^9-3a^6b^3+3a^3b^6-b^9-2b
6a^6b6^3+2b^9-2b
2)1-3a^3b^3+3a^6b^6-a^9b^9-(a^9b^9-3a^6b^6+3a^3b^3-1)-2
1-3a^3b^3+3a^6b^6-a^9b^9-a^9b^9-3a^6b^6+3a^3b^3-1-2
-6a^3b^3+6a^6b^6-2a^9b^9
3)3a^8b^4-3a^4b^8-(a^8-2a^4b^4+b^8)
3a^8b^4-3a^4b^8-a^8+2a^4b64-b^8
4)c^6+3c^4d62+3c^2d^4+d^6-3c^4d^2-3c^2d^4
c^6+d^6