B. Quadratic function defined by y = ax2 + bx + c can be transformed into the form y = a(z. - h)2 + k (called the Vertex Form), by using Completing the Square Method. The following steps can be followed. 1. Group together the terms containing x. 2. Factor out a. If a = 1, proceed to step 3. 3. Complete the expression in parenthesis to make it perfect square trinomial by adding the value of ( pand subtracting the value al to the constant term. 4. Simplify and express perfect square trinomial as the square of binomial.​