In this lesson, the instructor teaches how to factor a quadratic equation using a perfect square. The first step is to check if anything can be factored out. Then, the instructor advises to look for special factors like difference of two squares or perfect squares. The example problem is a perfect square, which allows the instructor to rewrite it as (X + 9) squared, making it easier to solve. The lesson emphasizes the importance of looking for shortcuts and special factors to make factoring easier.
How to factor a quadratic equation by using a perfect square
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Questions answered by this video:
How do I solve a quadratic equation by factoring?
How do I solve x^2+18x+81=15
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This lesson teaches how to find the solutions, roots, zeros, and x intercepts of a quadratic equation by factoring if there is a perfect square on one side of the equation.