#411
1) а^3+b^6 = (a+b^2)(a^2-ab^2+b^4)
2) x^9-y^3 = (x^3-y)(x^6+x^3*y+y^2)
3) x^6+y^6 = (x^2+y^2)(x^4-x^2*y^2+y^4)
4) x^6+y^3 = (x^2+y)(x^4-x^2*y+y^2)
5) p^3-q^9 = (p-q^3)(p^2+pq^3+q^6)
6) m^9-n^9 = (m^3-n^3)(m^6+m^3*n^3+n^6) = (m-n)(m^2+mn+n^2)(m^6+m^3*n^3+n^6)
#412
1)m^3+n^3 = (m+n)(m^2-mn+n^2)
2) x^9-y^6 = (x^3-y^2)(x^6+x^3*y^2+y^4)
3) a^6-8 = (a^2-2)(a^4+2a^2+4)
4) b^9+27 = (b^3+3)(b^6-3b^3+9)