How to complete the square.
How to solve quadratic equations using square roots.
How to find the vertex of a parabola.
How to solve an equation with a square root.
How to know when to include a plus and minus on a square root problem.
How to rationalize the denominator when dealing with an imaginary number.
How to know when to include a absolute value when simplifying a square root.
How to define factorial expressions used in the binomial theorem.
How to derive the quadratic formula by completing the square.
How to define an imaginary number.
How to know which method to use when solving a quadratic equation.