a) 5xy³ + 20x³ - 6a²y³ - 24a²x²
5x × (y³ + 4x²) - 6a² × (y³ + 4x²)
(y³ + 4x²) × (5x - 6a²)
b) 49x³a + 35bx + 77x²a³ + 55a²b
7x × (7x²a + 5b) + 11a² × (7x²a + 5b)
(7x²a + 5b) × (7x + 11a²)
(7ax² + 5b) × (7x + 11a²)
Dúvidas?
https://brainly.com.br/tarefa/13505093
https://youtu.be/5eX3-FNlUh0
