Respostas

2013-10-07T15:58:17-03:00
| 3 3 x | 3 3
| 4 4 4 | 4 4
| 5 x 5 | 5 x

-20x -12x - 60 + 60 + 60 + 4x² = 0
4x² - 32x + 60 = 0
x² - 8x + 15 = 0 
s= 8
p= 15
x1= 3 x2 = 5