**See Also**

circle equation video, circles video, completing the square video, curves video, equations video, plane figures video, quadratic equations video, shapes video, solving equations video, solving quadratic equations video.

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This math video tutorial gives a step by step explanation to a math problem on "Finding Equation Of A Circle By Completing The Square 3".

Finding equation of a circle by completing the square 3 video involves circle equation, circles, completing the square, curves, equations, plane figures, quadratic equations, shapes, solving equations, solving quadratic equations. The video tutorial is recommended for 3rd Grade, 4th Grade, 5th Grade, 6th Grade, 7th Grade, 8th Grade, 9th Grade, 10th Grade, 11th Grade, and/or 12th Grade Math students studying Algebra, Geometry, Calculus, Basic Math, Pre-Algebra, Pre-Calculus, and/or Advanced Algebra.

Circles are simple shapes of Euclidean geometry. A circle consists of those points in a plane which are at a constant distance, called the radius, from a fixed point, called the center.

A chord of a circle is a line segment whose both endpoints lie on the circle. A diameter is a chord passing through the center. The length of a diameter is twice the radius. A diameter is the largest chord in a circle.

Circles are simple closed curves which divide the plane into an interior and an exterior. The circumference of a circle is the perimeter of the circle, and the interior of the circle is called a disk. An arc is any connected part of a circle.

A circle is a special ellipse in which the two foci are coincident. Circles are conic sections attained when a right circular cone is intersected with a plane perpendicular to the axis of the cone.

A chord of a circle is a line segment whose both endpoints lie on the circle. A diameter is a chord passing through the center. The length of a diameter is twice the radius. A diameter is the largest chord in a circle.

Circles are simple closed curves which divide the plane into an interior and an exterior. The circumference of a circle is the perimeter of the circle, and the interior of the circle is called a disk. An arc is any connected part of a circle.

A circle is a special ellipse in which the two foci are coincident. Circles are conic sections attained when a right circular cone is intersected with a plane perpendicular to the axis of the cone.

An equation is a mathematical statement, in symbols, that two things are the same (or equivalent). Equations are written with an equal sign. Equations are often used to state the equality of two expressions containing one or more variables.

In mathematics, a quadratic equation is a polynomial equation of the second degree. The general form is

*a*x^{2} + *b*x + *c* = 0

where a ≠ 0. (For a = 0, the equation becomes a linear equation.)

The letters*a*, *b*, and *c* are called coefficients: the quadratic coefficient *a* is the coefficient of x^{2}, the linear coefficient *b* is the coefficient of x, and *c* is the constant coefficient, also called the free term or constant term.

Quadratic equations are called quadratic because quadratus is Latin for "square"; in the leading term the variable is squared.

where a ≠ 0. (For a = 0, the equation becomes a linear equation.)

The letters

Quadratic equations are called quadratic because quadratus is Latin for "square"; in the leading term the variable is squared.

Solving an equation means finding a value for the variable that makes the equation true.

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