Respostas

2014-03-28T10:36:47-03:00
(A)² + 4A=
(2/3)² + 4(2/3) =
4/6 + 8/3 =
4/6 + 16/6 =
20/6² = 10/3 OU 3,33333333

5A² + 3AB =
5(-3)² +3(-3)4 =
5*9 + (-36) =
45 - 36 = 9