vfhb1381 (√2 - 3√5)² + (√2 + 3√5)² = √2^2-2*√2*3√5+(3√5)^2+ √2^2+2*√2*3√5+(3√5)^2= 
√2^2=4
(3√5)^2=45, получаем
2+45+2+45=94