Answer:
i would belive its 12 :D
Step-by-step explanation:
m³ + 3m + 2n + 6
Given
(m³ + 4n) + (3m - 2n + 6) ← express without parenthesis
= m³ + 4n + 3m - 2n + 6 ← collect like terms
= m³ + 3m + 2n + 6
