\begin{tabular}{|llll|}\hline Desarrollar: & & \\ \hline 1. \( (a+2)^{3} \) & 4. \( (n-4)^{3} \) & 7. \( \left(2+y^{2}\right)^{3} \) & 10. \( \left(a^{2}-2 b\right)^{3} \) \\ 2. \( (x-1)^{3} \) & 5. \( (2 x+1)^{3} \) & 8. \( (1-2 n)^{3} \) & 11. \( (2 x+3 y)^{3} \) \\ 3. \( (m+3)^{3} \) & 6. \( (1-3 y)^{3} \) & 9. \( (4 n+3)^{3} \) & 12. \( \left(1-a^{2}\right)^{3} \) \\ \hline\end{tabular}

1. \( (a+2)^{3} = a^3 + 6a^2 + 12a + 8 \) 2. \( (x-1)^{3} = x^3 - 3x^2 + 3x - 1 \) 3. \( (m+3)^{3} = m^3 + 9m^2 + 27m + 27 \) 4. \( (n-4)^{3} = n^3 - 12n^2 + 48n - 64 \) 5. \( (2x+1)^{3} = 8x^3 + 12x^2 + 6x + 1 \) 6. \( (1-3y)^{3} = 1 - 9y + 27y^2 - 27y^3 \) 7. \( (2+y^{2})^{3} = 8 + 12y^2 + 6y^4 + y^6 \) 8. \( (1-2n)^{3} = 1 - 6n + 12n^2 - 8n^3 \) 9. \( (4n+3)^{3} = 64n^3 + 144n^2 + 108n + 27 \) 10. \( (a^{2}-2b)^{3} = a^6 - 6a^4b + 12a^2b^2 - 8b^3 \) 11. \( (2x+3y)^{3} = 8x^3 + 36x^2y + 54xy^2 + 27y^3 \) 12. \( (1-a^{2})^{3} = 1 - 3a^2 + 3a^4 - a^6 \)