Applications of Completing the Square Method. The quadratic formula is derived using a method of completing the square. Step 3 Complete the square on the left side of the equation and balance this by adding the same value to the right side of the equation.
Step 3 Complete the square on the left side of the equation and balance this by adding the same value to the right side of the equation.
For example if your instructor calls for you to solve the equation 2 x2 4 x 5 0 you can do so by completing the square. Be prepared to deal with fractions in this step. However even if an expression isnt a perfect square we can turn it into one by adding a constant number. Step 2 Move the number term ca to the right side of the equation.