ajutor urgent , matematica m2

Răspuns:
x^2+8=6x
x^2+8-6x=0
x^2-6x+8=0
delta= b^2-4ac
delta= 36-4×1×8
delta=36-32
delta=4
x1= -b-rad delta/2a= -(-6)-2/2= 4/2=2
x2= -b+rad delta/2a= -(-6)+2/2= 8/2=4