# 10.8: Quadratic Formula

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**Practice**Quadratic Formula

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Binomial

A binomial is an expression with two terms. The prefix 'bi' means 'two'.Completing the Square

Completing the square is a common method for rewriting quadratics. It refers to making a perfect square trinomial by adding the square of 1/2 of the coefficient of the term.Quadratic Formula

The quadratic formula states that for any quadratic equation in the form , .Roots

The roots of a function are the values of*x*that make

*y*equal to zero.

Square Root

The square root of a term is a value that must be multiplied by itself to equal the specified term. The square root of 9 is 3, since 3 * 3 = 9.Vertex

The vertex of a parabola is the highest or lowest point on the graph of a parabola. The vertex is the maximum point of a parabola that opens downward and the minimum point of a parabola that opens upward.### Image Attributions

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Description

Use the quadratic formula to solve equations and find the vertex of parabolas.

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Date Created:

Oct 01, 2012
Last Modified:

Apr 11, 2016
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