Solving quadratic equation algorithm - Flowchart

"In elementary algebra, a quadratic equation (from the Latin quadratus for "square") is any equation having the form
ax^2+bx+c=0
where x represents an unknown, and a, b, and c are constants with a not equal to 0. If a = 0, then the equation is linear, not quadratic. The constants a, b, and c are called, respectively, the quadratic coefficient, the linear coefficient and the constant or free term.
Because the quadratic equation involves only one unknown, it is called "univariate". The quadratic equation only contains powers of x that are non-negative integers, and therefore it is a polynomial equation, and in particular it is a second degree polynomial equation since the greatest power is two.
Quadratic equations can be solved by a process known in American English as factoring and in other varieties of English as factorising, by completing the square, by using the quadratic formula, or by graphing." [Quadratic equation. Wikipedia]
The flowchart example "Solving quadratic equation algorithm" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Mathematics solution from the Science and Education area of ConceptDraw Solution Park.

"Causes in the diagram are often categorized, such as to the 6 M's ...
The 6 Ms (used in manufacturing industry):
(1) Machine (technology);
(2) Method (process);
(3) Material (Includes Raw Material, Consumables and Information.);
(4) Man Power (physical work)/ Mind Power (brain work): Kaizens, Suggestions;
(5) Measurement (Inspection);
(6) Milieu/ Mother Nature (Environment).
The original 6Ms used by the Toyota Production System have been expanded by some to include the following and are referred to as the 8Ms. However, this is not globally recognized. It has been suggested to return to the roots of the tools and to keep the teaching simple while recognizing the original intent; most programs do not address the 8Ms.
(7) Management/ Money Power;
(8) Maintenance." [Ishikawa diagram. Wikipedia]
This 8Ms Ishikawa diagram (manufacturing cause and effect diagram) template is included in the Fishbone Diagram solution from the Management area of ConceptDraw Solution Park.