Question

помогитеее пожалуйстаа

Answer 1

$(\sqrt{8} -2\sqrt{5} )(\sqrt{2} +\sqrt[6]{20})(2-2\sqrt[6]{2,5}+\sqrt[3]{20} )=(\sqrt{8}-2\sqrt{5})[(\sqrt{2} )^{3} +(\sqrt[6]{20})^{3} ]=(\sqrt{8}-2\sqrt{5})(\sqrt{8}+\sqrt{20})=(\sqrt{8}-2\sqrt{5})(\sqrt{8}+2\sqrt{5})=(\sqrt{8})^{2}-(2\sqrt{5})^{2}=8-20=-12$