Leia \;  avaldise  \; 3a^2+4ab-3b^2 \; väärtus, \; kui\
a=\frac{\sqrt{5}+\sqrt{2}}{\sqrt{5}-\sqrt{2}} \;\;  ja \; \;b=\frac{\sqrt{5}-\sqrt{2}}{\sqrt{5}+\sqrt{2}}. 

a: (sqrt(5) + sqrt(2)) / (sqrt(5) - sqrt(2))
b: (sqrt(5) - sqrt(2)) / (sqrt(5) + sqrt(2))