Respostas

2014-08-19T20:49:34-03:00
13(1)² +8(2) - 4

13 + 16 - 4 

13 + 12 = 25
2 4 2
2014-08-19T20:50:06-03:00
13(1)^2+8(2)-4= 13+16-4=29-4=25