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Quadratic equation - Wikipedia
In mathematics, a quadratic equation (from Latin quadratus 'square') is an equation that can be rearranged in standard form as $${\displaystyle ax^{2}+bx+c=0\,,}$$ where the variable x represents an unknown number, and a, b, and c represent known numbers, where a ≠ 0. (If a = 0 and b ≠ 0 then the … See more
A quadratic equation whose coefficients are real numbers can have either zero, one, or two distinct real-valued solutions, also called roots. … See more
Babylonian mathematicians, as early as 2000 BC (displayed on Old Babylonian clay tablets) could solve problems relating the areas and sides of rectangles. There is evidence dating this … See more
The golden ratio is found as the positive solution of the quadratic equation $${\displaystyle x^{2}-x-1=0.}$$
The equations of the circle and the other conic sections See moreAlternative methods of root calculation
Vieta's formulas
Vieta's formulas (named after François Viète) … See more• "Quadratic equation", Encyclopedia of Mathematics, EMS Press, 2001 [1994]
• Weisstein, Eric W. "Quadratic equations". MathWorld.
• 101 uses of a quadratic equation Archived 2007-11-10 at the Wayback Machine See moreWikipedia text under CC-BY-SA license Quadratic Equation Solver - Math is Fun
Quadratic Equations - Math is Fun
Learn how to identify, graph and solve quadratic equations of the form ax^2 + bx + c = 0. Find out how to use the quadratic formula, the discriminant and complex solutions.
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Quadratic Equation Calculator - Symbolab
Quadratic Equations - Formulas, Methods, and …
Learn what a quadratic equation is, how to find its roots using the quadratic formula, and how to classify its nature based on the discriminant. Explore the applications of quadratic equations in physics, engineering, and astronomy.
Solving quadratics by completing the square (article) | Khan …
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2.1: Quadratic Equations - Mathematics LibreTexts
Dec 13, 2023 · Learn how to solve quadratic equations by factoring, square root property, completing the square, and quadratic formula. See examples, exercises, and graphs of quadratic functions.
9.3: Solve Quadratic Equations by Completing the Square
Study Guide - Quadratic Equations - Symbolab
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Quadratic Equations: Formula, Use, Examples, and Solutions
Completing the Square - Math is Fun
The Quadratic Formula to solve quadratic equations Step by step …
Completing the Square Formula: Your Step-by-Step Guide
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Completing the Square: Solving Quadratic Equations
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Quadratic Equation Solver - MathPapa
9.2: Completing the Square - Mathematics LibreTexts