Ответ:

1. 1) a² ⋅ aⁿ = a²⁺ⁿ.
2) x ⋅ xᵐ = x¹⁺ᵐ.
3) y¹² : yⁿ = y¹²⁻ⁿ.
4) cᵐ : c³ = cᵐ⁻³.
5) a²ⁿ ⋅ aⁿ = a²ⁿ⁺ⁿ = a³ⁿ.
6) x²ⁿ : xⁿ = x²ⁿ⁻ⁿ = xⁿ.