Question

Alguém ?????/?

Imagem em Anexo:

Answer 1

 Olá Micax!!

$y=\frac{2\cdot\frac{1}{2}-4\cdot\frac{\sqrt{3}}{2}+\sqrt{3}}{-\frac{1}{2}-\frac{\sqrt{3}}{2}}=\\\\\\y=\frac{1-2\sqrt{3}+\sqrt{3}}{\frac{-1-\sqrt{3}}{2}}=\\\\\\y=(1-\sqrt{3})\cdot\frac{-2}{1+\sqrt{3}}$
 
 Racionalizando,

$y=(1-\sqrt{3})\cdot\frac{-2}{1+\sqrt{3}}\cdot\frac{1-\sqrt{3}}{1-\sqrt{3}}\\\\\\y=\frac{(1-\sqrt{3})\cdot(-2)\cdot(1-\sqrt{3})}{1-3}\\\\\\y=\frac{1-\sqrt{3}-\sqrt{3}+3}{1}=\\\\\boxed{y=4-2\sqrt{3}}$