Question

Помогите пожалуйста,Срочно

Answer 1

$1. \ 2 sqrt{ 5dfrac{1}{2} }+ dfrac{1}{3} sqrt{99} -2 sqrt{2 frac{3}{4} } = \ \ = sqrt{11}+2* dfrac{ sqrt{11} }{ sqrt{2} }-2* { dfrac{ sqrt{11} }{2} } = \ \ = sqrt{22} + sqrt{11}- sqrt{11}= \ \ =sqrt{22} \ \ 2. \ sqrt{0,9}+ sqrt{14,4} - sqrt{8,1} = \ \ = sqrt{dfrac{9}{10}}+ sqrt{ dfrac{144}{10} }- sqrt{dfrac{81}{10}} = \ \ = dfrac{3 sqrt{10} }{10} +dfrac{6sqrt{10}}{5}- dfrac{9 sqrt{10} }{10} = \ \ = dfrac{6sqrt{10}}{10}= sqrt{3,6}$