Respostas

2014-07-13T16:11:17-03:00
(2a+3)2 + (a-5)2
4a + 6 + 2a -10
6a - 4    
2014-07-13T16:54:16-03:00
(2a+3) 2+ (a-5) 2
4a+6+2a-10
6a-4