Did you know that the expression is a perfect square trinomial? It can be factored into . This means that if you were to graph it, the vertex of the parabola would be at the point (-4, 0)—super handy for quickly sketching the curve!

When solving the equation , don’t forget to use the square root property on your factored form. Once you do that, you’ll find that the solution is with a multiplicity of 2. That means it touches the x-axis at this point but doesn’t cross it, giving it a unique charm!