Question

por favor me ajudem é até as 23h de hj

Answer 1

Resposta:

3

Explicação passo-a-passo:

$\frac{\sqrt{5+1}}{\sqrt{5-1}} +\frac{\sqrt{5-1}}{\sqrt{5+1}} \\\\\frac{\sqrt{5+1}x\sqrt{5+1}}{4} +\frac{\sqrt{5-1}x\sqrt{5-1}}{4}\\\\\frac{(\sqrt{5+1})^{2} }{4}+ \frac{(\sqrt{5-1})^{2} }{4}\\\\\frac{6+2\sqrt{5} }{4} +\frac{6-2\sqrt{5} }{4}\\\\\frac{2(3+\sqrt{5})}{4} +\frac{2(3-\sqrt{5})}{4}\\\\\frac{3+\sqrt{5}}{2} +\frac{3-\sqrt{5}}{2}\\\\\frac{3+\sqrt{5}+3-\sqrt{5}}{2} \\\\\frac{6}{2}\\\\3$