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.

This garden design example shows layout of trees, bushes, flowers, grass, paths, pool, patio and house.
"The cottage garden is a distinct style of garden that uses an informal design, traditional materials, dense plantings, and a mixture of ornamental and edible plants. ...
While the classic cottage garden is built around a cottage, many cottage-style gardens are created around houses and even estates... The cottage garden design is based more on principles than formulae: it has an informal look, with a seemingly casual mixture of flowers, herbs, and vegetables often packed into a small area. In spite of their appearances, cottage gardens have a design and formality that help give them their grace and charm. Due to space limitations, they are often in small rectangular plots, with practical functioning paths and hedges or fences. The plants, layout, and materials are chosen to give the impression of casualness and a country feel. Modern cottage gardens frequently use local flowers and materials, rather than those of the traditional cottage garden. What they share with the tradition is the unstudied look, the use of every square inch, and a rich variety of flowers, herbs, and vegetables." [Cottage garden. Wikipedia]
The landscape design sample "Country garden" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Landscape & Garden solution from the Building Plans area of ConceptDraw Solution Park.