d.

This expression is a quadratic polynomial that can be factored neatly! When you look closely, you can recognize that it takes the form of a perfect square trinomial. Specifically, can be expressed as . This is because completing the square reveals that both the linear and constant terms match up perfectly with the formula .

Additionally, quadratics like this one are frequently seen in various real-world scenarios, such as projectile motion or in calculating areas of shapes. They can help model simple physics problems like the height of a ball thrown into the air over time, giving you valuable insights into motion by solving for critical points such as maximum heights or time of flight!