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Completing the square

5 videos
3 skills
You're already familiar with factoring quadratics, but have begun to realize that it only is useful in certain cases. Well, this tutorial will introduce you to something far more powerful and general. Even better, it is the bridge to understanding and proving the famous quadratic formula. Welcome to the world of completing the square!

Solving quadratic equations by completing the square

VIDEO 14:06 minutes
Solving Quadratic Equations by Completing the Square

Example 1: Completing the square

VIDEO 3:22 minutes
U10_L1_T2_we1 Completing the Square 1

Example 2: Completing the square

VIDEO 5:24 minutes
U10_L1_T2_we2 Completing the Square 2

Example 3: Completing the square

VIDEO 5:44 minutes
Completing the Square to Solve Quadratic Equations

Solving quadratics by completing the square 1

Find the roots of a quadratic equation by completing the square.

Solving quadratics by completing the square 2

Find the roots of a quadratic by completing the square. The numbers are a bit less convenient than they are in level 1.

Completing the square for quadratic formula

VIDEO 9:31 minutes
Completing the Square 4