Respostas

2014-05-08T16:00:41-03:00
5x^2 + 2.5x.2y + 4y^2 que resulta em 5x^2 + 20xy + 4y^2
2014-05-08T16:02:29-03:00
25x²+10xy+10xy+4y²=
25x²+20xy+4y²=
25x²+4y²+20xy