Answer:
Step-by-step explanation:
[tex](3a^{2} + 6b - 4) + (5a^{2} + 8b + 5)[/tex]
[tex]3a^{2} + 6b - 4 + 5a^{2} + 8b + 5[/tex]
Let's group the terms based on their polynomial:
[tex]a^{2}(3 + 5) + b(6 + 8) + (-4 + 5)[/tex]
[tex]8a^{2} + 14b + 1[/tex]