Respostas

2014-04-22T16:28:51-03:00
X1= (4+√44)/2 = 2+√11
x2= (4-√44)/2 =  2-√11

x1²+x2²= 4+11+4√11 + 4+11-4√11 = 8+22 = 30   (D)
2 3 2