Question

Преобразуйте дробь: (3√3-√18)/(5-2√6)

Answer 1

(3√3-√18)/(5-2√6)  
(√27-√18)/(√25-√24)=(√27-√18)(√25+√24)/(25-24)=
=(3√3-3√2)(5+2√6)=15√3+6√18-15√2-6√12=
=15√3+18√2-15√2-12√3=3√3+3√2