How to Solve a Quadratic Equation by Completing the Square?
Algebra 1 Solving a Quadratic Equation by Completing the Square Completing the square rewrites \(x^2 + bx + c\) as a perfect square plus a constant, \((x + \tfrac{b}{2})^2 + k\). It reveals the vertex instantly and lets you solve any quadratic with a square root. We’ll build the method carefully, with a solver and […]