Read the question and answer.

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Which of the following expressions is equal to 2x^2+8