√2+√3/√2-√3 + √2-√3/√2+√3
-(√2+√3)*(√2+√3)-(√2-√3)*(√2-√3)
-(√2+√3)^2-(√2-√3)^2
-(2+2√6+3)-(2-2√6+3)
-(5+2√6)-(5-2√6)
-5-2√5-5+2√6
-5-5
-10
ответ: -10
