Quadratic Formula 4
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Lesson Summary:
This lesson teaches how to solve quadratic equations in standard form using the quadratic formula and factoring. The first step is to simplify each side of the equation so that it can be put in standard form. Next, the quadratic formula is used to find the solutions. Alternatively, factoring can also be used to solve the equation. The lesson walks through step-by-step how to use both methods, and emphasizes the importance of checking the solutions by plugging them back into the original equation.
Lesson Description:
Part 4 of using the quadratic formula to solve quadratic equations in standard form.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you use the quadratic formula to solve quadratic equations?
- How do you use the quadratic formula to solve 7x(x - 2) + 2(x + 4) = 3?
- How do you solve 7x(x - 2) + 2(x + 4) = 3 by factoring?
- When is it faster to solve a quadratic equation by factoring rather than using the quadratic formula?
- How do you check your solution to a quadratic equation?
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Staff Review
This lesson shows how to solve a quadratic equation that first needs to be simplified using the quadratic formula and also by factoring. Both methods are explained with all work shown. You will also learn how to check your solution.
