Layne Herring

Mathematics

2 December, 16:40

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?