Respostas

2014-03-29T11:13:10-03:00
2x² + 8    sendo x = -3
2.(-3)² + 8
2.9 + 8
18 + 8
26
2 5 2
2014-03-29T11:13:23-03:00
2x² + 8 =
2* (-3)² + 8 =
2* 9 + 8 =
18 + 8 = 26 :) 
1 5 1