Answer:
[tex]21 + 7i[/tex]
Step-by-step explanation:
[tex]1. \: 2(4 + 6i) - 3^{2} i^{2} + 4 - 5i \\ 2. \: 2(4 + 6i) - 9i^{2} + 4 - 5i \\ 3. \: 2(4 + 6i) - 9 \times - 1 + 4 - 5i \\ 4. \: 2(4 + 6i) - ( - 9) + 4 - 5i \\ 5. \: 2(4 + 6i) + 9 + 4 - 5i \\ 6. \: (9 + 4) + (2(4 + 6i) - 5i) \\ 7. \: 13 + 2(4 + 6i) - 5i \\ 8. \: 13 + 8 + 12 - 5i \\ 9. \: (13 + 8) + (12i - 5i) \\ 10. \: 21 + 7i[/tex]
