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Study Guides > Intermediate Algebra

Introduction to Quadratic Equations

An equation containing a second-degree polynomial is called a quadratic equation. For example, equations such as 2x2+3x1=02{x}^{2}+3x - 1=0 and x24=0{x}^{2}-4=0 are quadratic equations. They are used in countless ways in the fields of engineering, architecture, finance, biological science, and, of course, mathematics.