Question

x^2+5x+4............​

Answer 1

Răspuns:

x²+5x+4=0

a=1

b=5

c=4

∆=b²-4ac

∆=5²-4•1•4

∆=25-16

∆=9

x1;x2= b-√∆/2=5-√9/2=5-3/2=2/2=1

x1;x2=b+√∆/2=5+√9/2=5+3/2=8/2=4

==> x1=1,iar x2=4

.

Succes!