Polynomials

In algebra, a quadratic equation (from the Latinquadratus for "square") is any equation having the form

ax^2 + bx+ c = 0 

where x represents an unknown, and a, b, and crepresent known numbers such that a is not equal to 0. If a = 0, then the equation is linear, not quadratic. The numbers a, b, and c are the coefficients of the equation, and may be distinguished by calling them, 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. Solutions to problems equivalent to the quadratic equation were known as early as 2000 BC.

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Rajasthan State Exams

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(Hindi) Quadratic Equations For RPSC

Algebra

Basic Numeracy

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Last moment with quadratic equations

Overview (in Hindi)

Lessons one Introduction (in Hindi)

Nature of Roots (in Hindi)

Nature of Roots: Part 2 (in Hindi)

Nature of Roots with Example (in Hindi)

Quadratic Equations understand with Question (in Hindi)

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Last moment with quadratic equations

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(Hindi) Quadratic Equations For RPSC

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