The value of the discriminant of the equation, $\sqrt{3}x^2 + 10x + 7\sqrt{3}$ = 0 is:

1. 4

2. 16

3. -16

4. -12

The value of the discriminant of the equation, x² - ($\sqrt{2}$ + 1)x + $\sqrt{2}$ = 0 is:

1. 3 + $2\sqrt{2}$

2. 1 - $2\sqrt{2}$

3. 3 - $2\sqrt{2}$

4. 2 - $\sqrt{2}$

If the equation, ax² + 2x + a = 0 has two real and equal roots, then:

1. a = 0, 1

2. a = 1, 1

3. a = 0, -1

4. a = -1, 1

The given quadratic equation 3x² + $\sqrt{7}$ x + 2 = 0 has:

1. two equal real roots.

2. two distinct real roots.

3. more than two real roots.

4. no real roots.