Calculeaza::::::::::::::::::::::::

Calculeaza class=

Răspuns :

4(√5-√2)²=

4(5-2·√5·√2+2)=

4(7-2√10)=

28-8√10


√(7-2√10)=

√(√5²-2·√5·√2+√2²)=

√(√5-√2)²=

I√5-√2 I=

√5-√2