Question

$\frac{1}{2 + \sqrt{2} }$

Answer 1

Resposta:

$\frac{2-\sqrt{2} }{2}$

Explicação passo-a-passo:

$\frac{1}{2+\sqrt{2} }.\frac{2-\sqrt{2} }{2-\sqrt{2} }\\\\\frac{2-\sqrt{2} }{4-2\sqrt{2}+2\sqrt{2}-2  }\\\\\frac{2-\sqrt{2} }{2}$