Question

вычислите, срочно нужно!!!

Answer 1

$sqrt[3]{5 sqrt{2}+7 }- sqrt[3]{5 sqrt{2}-7 } = \ = sqrt[3]{1+3 sqrt{2}+6+2 sqrt{2} } - sqrt[3]{-1+3 sqrt{2}-6+2 sqrt{2} }= \ = sqrt[3]{(1+ sqrt{2})^3 }- sqrt[3]{(-1+ sqrt{2})^3 }= \ =1+ sqrt{2}+1- sqrt{2}= \ =2$

Answer 2

спс большое