Question

Va rog dau coroana!!!

Answer 1

Răspuns:

calculam delta: b*b-4*a*c

delta=16+20

delta=36

radical din delta = 6

x1 = (-4 + 6)/(2*5)

x1=2/10

x1=1/5

x2 = (-4 - 6)/(2*5)

x2 = -10/(2*5)

x2= -1