en.wikipedia.org/wiki/Completing_the_square

In elementary algebra, completing the square is a technique for converting a
quadratic polynomial of the form. a x 2 + b x + c {\displaystyle ax^{2}+bx+c\,\!} ...

www.khanacademy.org/math/algebra/quadratics/solving-quadratics-by-completing-the-square/v/ex2-completing-the-square

Sal solves the equation 4x^2+40x+280=0 by completing the square, only to find
... I'm using the word real because in Algebra 2 you'll learn that there are things ...

www.khanacademy.org/math/algebra/quadratics/solving-quadratics-by-completing-the-square/v/solving-quadratic-equations-by-completing-the-square

Learn how to solve quadratic equations by completing the square, which is the
basis for the quadratic formula. ... Algebra I Quadratic equations and functions.

www.purplemath.com/modules/sqrquad.htm

Now, let's start the completing-the-square process. ... When solving by
completing the square, we'll want the x<sup>2</sup> to be by itself, so we'll need to .....
Algebra Tutors ...

www.mathsisfun.com/algebra/completing-square.html

Completing the Square Geometry. As you can see x<sup>2</sup> + bx can be rearranged
nearly into a square ... ... and we can complete the square with (b/2)<sup>2</sup>. In Algebra
it ...

www.ask.com/youtube?q=Algebra Completing the Square&v=DJMH2F3GuIc

Feb 26, 2013 ... Hi Algebrinos! As we progress with our problem solving prowess, we include
solving by using the nifty method of solving quadratic equations ...

www.themathpage.com/alg/complete-the-square.htm

IN LESSON 18 we saw a technique called completing the square. We will now
see how to apply it to solving a quadratic equation. Completing the square.

www.chegg.com/homework-help/definitions/completing-the-square-27

Definition of completing the square and related terms and concepts. ... See more
Algebra topics ... Get help on Algebra with Chegg Study. Answers from experts.

www.sosmath.com/algebra/factor/fac07/fac07.html

Quadratic Polynomials: Completing the Square. If guessing does not work, "
completing the square" will do the job. A first example. Let us try to factor ...

www.mathplanet.com/education/algebra-1/quadratic-equations/completing-the-square

we can't use the square root initially since we do not have c-value. But we can
add a constant d to both sides of the equation to get a new equivalent equation ...