Răspuns:
x²=[tex]\frac{1}{5} (20-\sqrt[3]{5} )*\sqrt{19-\sqrt[8]{3} }[/tex]
x=±[tex]\sqrt{\frac{1}{5}*(20-\sqrt[5]{3} *\sqrt{19-\sqrt[8]{3} } }[/tex]
x1=+[tex]\sqrt{1/5*(20-\sqrt[5]{3}) \sqrt{19-\sqrt[8]{3} } }[/tex]
x2=-[tex]\sqrt{1/5*(20-\sqrt[5]{3} )*\sqrt{19-\sqrt[8]{3} } }[/tex]
S={x1,x2}
Explicație pas cu pas: