Mathematics - Algebra - Quadratics - Introduction to quadratic equations - What Is a Quadratic Equation?
5 steps: (1) A quadratic equation has the form ax²+bx+c=0 (degree 2). (2) It can have 0, 1, or 2 solutions (x-intercepts of the parabola). (3) The solutions are also called ROOTS or ZEROS. (4) Standard form: ax²+bx+c=0. Identify a, b, c in examples: 2x²-5x+3=0 → a=2, b=-5, c=3. (5) Methods to solve: