An overview of equations and equation solving: elementary equations,
quadratic equations, and systems of equations.
Learn why equations are solved and how they model real-world processes.
Includes transformations, domain restrictions, loss of solutions,
and extraneous roots.
Completing the square means “packing” a quadratic trinomial into either the square of a sum or a difference.
To understand this process, you need to know how to use these formulas!
