Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.

x squared plus 3 equals negative 4 x

First, rewrite the equation in standard form:

x^2 + 4x + 3 = 0

Now, identify the coefficients:

a = 1, b = 4, c = 3

Apply the quadratic formula:

x = (-b ± √(b^2 - 4ac)) / 2a

x = (-4 ± √(4^2 - 4(1)(3))) / 2(1)
x = (-4 ± √(16 - 12)) / 2
x = (-4 ± √4) / 2
x = (-4 ± 2) / 2

Now, calculate the two possible solutions:

x1 = (-4 + 2) / 2 = -2 / 2 = -1
x2 = (-4 - 2) / 2 = -6 / 2 = -3

Therefore, the solutions to the equation are x = -1 and x = -3.