Question

$1)(11-sqrt{17})(11+sqrt{17})</var></p> <p> </p> <p><var> 2)14(1+sqrt{31})+(7-sqrt{31})^{2}</var></p> <p> </p> <p><var> 3) 2sqrt{3}(sqrt{12}+3sqrt{5})-sqrt{5}(6sqrt{3}-sqrt{20})</var></p> <p> </p> <p><var>4)sqrt{6}(0,5sqrt{24}-8sqrt{11})-4sqrt{11}(sqrt{99}-2sqrt{6})$

 

Answer 1

см. вложение

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