Question 1025366
Add and Subtract 4 to the right hand member.  Do you know why 4?


<a href="https://www.algebra.com/my/Completing-the-Square-Using-Pictures.lesson?content_action=show_dev">What is the meaning of Completing the Square?</a>


<a href="https://www.algebra.com/my/Completing-the-Square-to-Solve-General-Quadratic-Equation.lesson?content_action=show_dev">Using Complete-The-Square to solve a Quadratic Equation</a>


RESULT:  {{{highlight(f(x)=(x+2)^2-16)}}}