completing the square

$\tfrac{1}{2} a x^2 - b x
=
\tfrac{1}{2} a(x - b/a)^2 - \tfrac{1}{2}b^2 a^{-1}$

- Wikipedia,
*Completing the square*

Last revised on November 17, 2015 at 08:50:44. See the history of this page for a list of all contributions to it.