Okay, I am very grateful for all your help on this matter however I really do not understand pretty much any of it. On the sheet that the teacher gave me the title is to Solve Quadratics by Factorising. Then, the first question is x(x - 7) = 0. If someone could please go through this question explaining every step in simple terms as the teacher only tought us what we had to do in 1 lesson?