Question

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

Answer 1

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