Math Plane 

Completing the square or using the quadratic formula and discriminant are useful when working with quadratic equations. The following is an introduction that includes steps, formulas, and examples. Also, a geometric approach to completing the square is illustrated.

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Information

• perfect square trinomials

• Vertex form of quadratic

• deriving the quadratic formula

• Standard form of a circle

• Maximum of a parabola

• Find center of circle

• Discriminant

• geometric perspective - addition and subtraction

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Completing the Square Basic Steps

1) Isolate the variables

1a) Change the lead coefficient to 1

2) Complete the square

3) Factor the trinomial

4) Simplify or solve

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<--- Practice Quiz

<--- Solutions 

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Quadratic Formula

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"Friends don't let friends dErive drunk"  (click lower right to view)

Math humor in Gate C

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