Răspuns :
[tex]\left.\begin{aligned}&f(x) = x^2-3x+2\\&g(x) = 2x-4\end{aligned}\right|\Rightarrow f(x) = g(x)[/tex]
[tex]\\\Rightarrow x^2-3x+2 = 2x-4\\ \\\Rightarrow x^2-3x-2x+2+4 = 0\\\\\Rightarrow x^2-5x+6 = 0\\ \\ x_1+x_2 = -\dfrac{-5}{1}\Rightarrow \boxed{x_1+x_2 = 5}[/tex]