$\dfrac{2}{3}$ and 1 are the solutions of equation mx² + nx + 6 = 0. Find the values of m and n.

The roots of the quadratic equation x² - 6x - 7 = 0 are :

1. -1 and 7

2. 1 and 7

3. -1 or 7

4. 1 and -7

If one root of equation (p - 3)x² + x + p = 0 is 2, the value of p is :

1. -2

2. 2

3. ±2

4. 1 and 2

If $x + \dfrac{1}{x}$ = 2.5, the value of x is :

1. 4

2. 5 and $\dfrac{1}{5}$

3. 2 or $\dfrac{1}{2}$

4. 2 and $\dfrac{1}{2}$