Question

Simplifique a expressão (2a + 1)³ - (a + 2)² - 6a (a² + a -1)​

Answer 1

Resposta: 2a³+5a²+8a-3

Passo a passo:

(2a+1)³ - (a+2)² - 6a (a²+a-1)

8a³ + 12a² +6a + 1 - (a+2)² - 6a (a²+a-1)

8a³+12a²+6a+1-(a²+4a+4)-6a(a²+a-1)

8a³+12a²+6a+1-a²-4a-4-6a(a²+a-1)

8a³+12a²+6a+1-a²-4a-4-6a³-6a²+6a

2a³+5a²+8a-3