In previous units, we have used the rules of factoring to solve quadratic equations. In this unit, we learn three new methods for solving quadratic equations: the principle of square roots, completing the square, and the quadratic formula.

Part A: Which method for solving quadratic equations do you find the easiest to understand and use? Why?

Part B: Name one field other than pure mathematics that uses quadratic equations, and give an example of how they are used (just an explanation, not a problem worked).

This is just a discussion board question.

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