Respostas

2014-07-30T08:18:27-03:00
√x²-5=√5
x-5= 2,5
x= 2,5 +5
x= 3

1 5 1
2014-07-30T08:35:18-03:00
√ײ-5=√5
(ײ-5)²=(√5)²
X-5=5
X=5+5
X=10

Verificando a raiz x=10
√x²-5=√5
√10-5=√5
√5=√5
5=5