## How To Complete the Square – Calculator

How to Complete the Square The Quadratic Equation in Standard Form is $$\boxed{ y=x^2+bx+c }$$ To Complete the Square we add and subtract $$\textcolor{blue}{({b \over 2})^2}$$ which yields: $$\boxed{ y=x^2+bx+ \textcolor{blue}{({b \over 2})^2} + c – \textcolor{blue}{({b \over 2})^2} }$$ Completing the Square yields: $$\boxed{ y=(x+b/2)^2 + c – ({b \over 2})^2 }$$ … Read more