### Completing The Square

A technique for finding a squared term in a quadratic equation.

### Complex Numbers

Numbers with both a real and imaginary component, of the form

*a* +

*bi*.

### Discriminate

What is the discriminate? A miserable little pile of secrets. Also, the expression that determines how many solutions a quadratic equation has;

*b*^{2} – 4

*ac.**i*

The imaginary number, equal to

.

### Imaginary Numbers

Numbers that contain

*i*, of the form

*bi*.

### Parabola

The graphical representation of a quadratic equation. A smooth, continuous curve that points in one direction.

### Quadratic Equation

A polynomial equation of the form

*y* =

*ax*^{2} +

*bx* +

*c*.

### Quadratic Formula

A formula for finding the roots of a quadratic equation;

.

### Quadratic Function

A relation where the input (

*x*) is related to the output (

*y*) by a quadratic equation;

*y* =

*ax*^{2} +

*bx* +

*c*.

### Vertex

The single maximum or minimum value of a parabola.