Sample Response: The quadratic formula is derived from a quadratic equation in standard form when solving for x by completing the square. The steps involve creating a perfect square trinomial, isolating the trinomial, and taking the square root of both sides. The variable is then isolated to give the solutions to the equation. What did you include in your response? Check all that apply.The formula is derived from completing the square. If you complete the square to solve, you will get the quadra