Respostas

  • Usuário do Brainly
2014-08-01T00:29:55-03:00
(2a+3)³=
cubo do 1°=(2a)³=8a³
+3×(2a)²×3=3×4a²×3=36a²
+3×2a×3²=6a×9=54a
+cubo do 2°=3³=27

(2a+3)³=8a³+36a²+54a+27