Answer:
2m³ + 9m² - 19m - 11
Step-by-step explanation:
3f(m) - 2g(m)
= 3(3m² - 5m + 1) - 2(- m³ + 2m + 7) ← distribute parenthesis
= 9m² - 15m + 3 + 2m³ - 4m - 14 ← collect like terms
= 2m³ + 9m² - 19m - 11
