The Quadratic Formula Lesson

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In this section, we learn how to solve any quadratic equation using the quadratic formula. So far, we have only seen how to
solve a quadratic equation using factoring, or completing the square. Factoring is an easy method, but does not work in every
situation. We can always use completing the square, but the process is extremely tedious. The quadratic formula provides a
quick and easy method to solve any quadratic equation. To use the quadratic formula, we begin by placing the equation in
standard form:$$ax^2+bx+c=0$$We then take the parameters: a (the coefficient for the squared variable),
b (the coefficient for the variable raised to the first power), and c ( the constant term), and plug them into the quadratic formula:
$$x = \frac{-b\pm \sqrt{b^2-4ac}}{2a}$$

The Quadratic Formula Resources:

Videos:

Khan Academy - Video
Khan Academy - Video
Virtual Nerd - Video
Text Lessons:

Khan Academy - Text Lesson
Khan Academy - Text Lesson
Chili Math - Text Lesson
Worksheets:

Math-Aids - Worksheet
Kuta - Worksheet
Khan Academy - Practice
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