Solving quadratic equations by completing the square - Quadratic Equations
Solving quadratic equations by completing the square
When a quadratic equation cannot be factorized, we can use the method of completing the square to solve the equation.
Lessons
Notes:
4-step approach:
1. isolate X's on one side of the equation
2. factor out the leading coefficient of
3. "completing the square"
• X-side: inside the bracket, add (half of the coefficient of
• Y-side: add [ leading coefficient (half of the coefficient of ]
4. clean up
• X-side: convert to perfect-square form
• Y-side: clean up the algebra
