Răspuns :
x²+5x+4+0
a=1, b=5, c=4, Δ=b²-4ac=5²-4*1*4=25-16=9
x1=-b+√Δ/2a=-5+3/2=1
x2=-b-√Δ/2a=-5-3/2=-8/2=-4
a=1, b=5, c=4, Δ=b²-4ac=5²-4*1*4=25-16=9
x1=-b+√Δ/2a=-5+3/2=1
x2=-b-√Δ/2a=-5-3/2=-8/2=-4