👤

calculati (1 /√5 )²+(1/√5 -1)² -3/5=.....
Please..


Răspuns :

 rezolvarea in poza atasata ...........
Vezi imaginea ALITTA
=1/5+1/(5-2√5+1)-3/5
=1/5+1/(6-2√5)-3/5=(6+2√5)16-2/5=(3+√5)/8-2/5=(5√5-1)/40