Respostas

2014-03-18T16:01:46-03:00
Fatorando as raizes

50/2
25/5
5/5
1
√50= 2.5² = 5√2

raiz de 8 
8/2
4/2
2/2
1
√8 = 2².2 = 2√2

 \frac{5 \sqrt{2} -2 \sqrt{2} }{ \sqrt{2} } =5-2=3