Question

решить систему уравнений y=x2+4x+3 и y=x+3

Answer 1

$\left \{ {{y = x^2 + 4x + 3} \atop {y = x + 3}} \right. \\ x + 3 = x^2 + 4x + 3 \\ x^2 + 3x = 0 \\ x(x + 3) = 0 \\ x_1 = 0 \\ x_2 = -3$