Respostas

2014-04-21T20:16:38-03:00
(2a² + b).(ab³ + 5) =  (propriedade distributiva)
2a².ab³ + 2a².5 + b.ab³ + b.5 =
2a³b³ + 10a² + ab⁴ + 5b (resp)



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2014-04-21T20:25:29-03:00
(2a²+b).(ab³+5)=
(2a³b³+10a²) x (2a³b³+5b)=
10a² x 5b=
50a²b
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