Completing the Square and Quadratic Formula 2

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Taught by YourMathGal
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Lesson Summary:

In this math lesson, we learn how to solve quadratic equations using the completing the square method and the quadratic formula. The equation solved in the lesson has a coefficient of x-squared that is not 1, so we learn how to adjust the equation to make it solvable. By completing the square, we get a solution in the form of complex numbers, and when we use the quadratic formula, we get the same solution. This lesson is perfect for anyone looking to improve their skills in solving quadratic equations.

Lesson Description:

One more example of completing the square to solve a quadratic equation, when the coefficient of x-squared is not 1. The problem is also solved using the quadratic formula.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • What is the quadratic formula?
  • How can you solve a quadratic equation by completing the square?
  • How do you solve a quadratic equation using the quadratic equation?
  • How do you solve 3x^2 - 5x + 7 = 0 by completing the square and also by using the quadratic formula?
  • Staff Review

    • Currently 4.0/5 Stars.
    In this lesson, you will see how to solve a quadratic equation by using two different methods. The first method is by completing the square. Then, you will see how to solve it using the quadratic formula. All steps involved in solving both ways are shown and explained.