👤


x la. 2 + 5x + 4 repede am nev de exemplu


Răspuns :

5x egal 4 plus 2
5x egal 6
x egal 6: 5
x egal 1 succes
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