# Completing the square

In elementary algebra, completing the square is a technique for converting a quadratic polynomial of the form

${\displaystyle ax^{2}+bx+c}$

to the form

${\displaystyle a(x-h)^{2}+k}$

for some values of h and k.

Completing the square is used in

In mathematics, completing the square is often applied in any computation involving quadratic polynomials.