In this topic, we focus on quadratic equations. We begin by learning how to manipulate quadratic equations by completing the square, and finding the minimum and maximum values of functions.
e.g. ( x + 3 ) 2 = ( x + 3 ) ( x + 3 ) = x 2 + 6 x + 9 {\displaystyle (x+3)^{2}=(x+3)(x+3)=x^{2}+6x+9}
