Question

Calculati media aritmetica a solutiilor ecuatiei x la 2 +5x+6

Answer 1

     
$x^{2} +5x+6 = 0 \\ x^{2} + 3x + 2x + 6 = 0 \\ x(x+3) + 2(x+3)=0 \\ (x+3)(x+2)=0 \\ x+3=0 \;\;\;=\ \textgreater \ \;\;\;x_1=-3 \\ x+2=0 \;\;\;=\ \textgreater \ \;\;\;x_2=-2 \\ \\ m_a = \frac{-3-2}{2}= \frac{-5}{2}= \boxed{-2,5}$