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10.8: Quadratic Formula

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

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 x term.

Quadratic Formula

The quadratic formula states that for any quadratic equation in the form ax^2+bx+c=0, x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}.

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.

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Difficulty Level:
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Date Created:
Oct 01, 2012
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Apr 11, 2016
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