ajutooooor...
vă roooog


Ajutooooorvă Roooog class=

Răspuns :

a)xrad2=(2rad5+3rad2)(2rad5-3rad2)
xrad2=20-18
xrad2=2
x=2/rad2=2rad2/2=rad2

b)xrad6=(3rad2-2rad3)(3rad2+2rad3)
xrad6=18-12
xrad6=6
x=6/rad6=6rad6/6=rad6