Question

desenvolva as seguintes expressões (2a+1)^3​

Answer 1

(2a + 1)³

(2a)³ +3.(2a)².1 + 3.2a.1² + 1³

8a³ + 3.4a².1 + 6a.1 + 1

8a³ + 12a² + 6a + 1

Answer 2

Oie, Td Bom?!

$= (2a + 1) {}^{3}$

$= (2a) {}^{3} + 3 \: . \: (2a) {}^{2} \: . \: 1 + 3 \: . \: 2a \: . \: 1 {}^{2} + 1 {}^{3}$

$= 8a {}^{3} + 3 \: . \: 4a {}^{2} \: . \: 1 + 3 \: . \: 2a \: . \: 1 + 1$

$= 8a {}^{3} + 12a {}^{2} + 6a + 1$

Att. Makaveli1996