Which of the following quadratic equations has 2 and 3 as its roots?

1. x² - 5x + 6 = 0

2. x² + 5x + 6 = 0

3. x² - 5x - 6 = 0

4. x² + 5x - 6 = 0

If the equation, x² - ax + 1 = 0 has two distinct and real roots, then:

1. |a| ≥ 2

2. |a| ≤ 2

3. |a| > 2

4. |a| < 2