Question

Buna cum se rezolva n la puterea 2 + 4n + 3. 

Answer 1

n² + 4n +3= (n+3)(n+1)

Answer 2

$n^{2} +4n+3=0$
Calculam discriminantul Δ=$4^{2}-4*1*3=4>0$=>
[tex] x_{1}= \frac{-4+2}{2} =-1 x_{2}= \frac{-4-2}{2} =-3 [/tex]