In this lesson, you will learn how to complete the square by factoring out a negative sign. The teacher walks you through the steps needed to get from the quadratic form to the perfect square trinomial form. By using the tip of B over two squared, you can easily find the binomial that is needed to get the trinomial. The key to this lesson is to remember to factor out and multiply the same value to ensure the equation is still equivalent.
Completing the square by factoring out a negative one
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Questions answered by this video:
How do I complete the square when there is a negative sign in front of x^2?
How do I complete the square on the equation -x^2+2x+5?
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This lesson shows how to complete the square when there is a negative sign in front of the x^2 term.