The video shows a person writing on a blackboard with chalk. The person writes down a mathematical equation, which is a quadratic equation with a coefficient of 1. The person then proceeds to write down the solution to the equation, which is 1 plus the square root of 2. The person writes down the solution in a step-by-step manner, starting with the equation, then the solution, and finally the answer. The person's hand is visible in the video, and they are using a piece of chalk to write on the blackboard. The blackboard is black, and the chalk is white, which makes the writing stand out. The person's handwriting is clear and legible. The video is shot from a close-up angle, focusing on the blackboard and the person's hand.