# 1. How do you determine the constant that you should add to an expression in the form x^2+bx so that it becomes a perfect square trinomial? 2. When solving a quadratic equation by completing the square, why must you add the number that completes the square to both sides of the equation? 3. Why might you discard a negative solution in a real-world problem?

###### Question:

1. How do you determine the constant that you should add to an expression in the form x^2+bx so that it becomes a perfect square trinomial?
2. When solving a quadratic equation by completing the square, why must you add the number that completes the square to both sides of the equation?
3. Why might you discard a negative solution in a real-world problem?

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