Решите пожалуйста (1/4)^-1/2*251/2-811/2*125-1/3

[latex] \frac{1}{4}^{- \frac{1}{2}}*25^{ \frac{1}{2}}-81^ \frac{1}{2}*125^ {-\frac{1}{3}}= [/latex] [latex] \frac{1}{ \frac{1}{ \sqrt{4} } }* \sqrt{25}- \sqrt{81}* \frac{1}{ \sqrt[3]{125} } = [/latex] [latex] \sqrt{4}*\sqrt{25}- \sqrt{81}* \frac{1}{ \sqrt[3]{125} }=2*5- \frac{9}{5}=10- \frac{9}{5}= \frac{50-9}{5}= \frac{41}{5}=8,2 [/latex]