Question

Rápido please (5a+2).(3a²-4a+1)

Answer 1

$15 {a}^{3} - 20 {a}^{2} + 5a + 6 {a}^{2} - 8a + 2$
resolvendo:
$15 {a}^{3} - 14 {a}^{2} - 3a + 2$

Answer 2

(5a+2).(3a²-4a+1)

15a³ - 20a² + 5a + 6a² - 8a + 2

15a³ - 20a² + 6a² + 5a - 8a + 2

15a³ - 14a² - 3a + 2