Respostas

2014-08-21T17:38:03-03:00
X² = (2√2)² + (√10)²
X² = 4
√4 + √100 
X² = 4 . 2 + 10
X² = 18
X = 
√18

Fatorando o 18
3² . 2
3
√2
1 5 1