| A | B |
|---|
| quadratic equation | an equation where the greatest exponent is 2 |
| axis of symmetry | the line that divides a parabola into two equal halves |
| parabola | the graph of a quadratic equation |
| maximum value | the y-coordinate of the vertex of a parabola opening downward |
| complex conjugates | their product is always a real number |
| discriminant | used to find the number and type of roots for a quadratic equation |
| vertex | the axis of symmetry goes through this point on the parabola |
| minimum value | the y-coordinate of the vertex of a parabola opening upward |
| zeros | the x-intercepts of a graph |
| complex number | an expression with a real and imaginary part |
| roots | the solutions of a quadratic equation |
| pure imaginary numbers | square roots of negative numbers |
| imaginary unit | √-1 |
| i^2 | –1 |
