# Quadratic Formula and Functions

# Algebra II Terms

## Get down with the lingo

### 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*.