Respostas

2014-05-19T14:55:27-03:00
(x+1)² = 100

x+1 = 10 ou x+1 = -10

x = 9 ou x = -11
2014-05-19T20:42:38-03:00
(x+1)²=100
x + 1         = V 100
x               = 
±    10

x'  =   -10
x'' =     10