Consider the following equation k²x² - 2kx + 1 = 0

Assertion (A): This equation has real roots for all non-zero values of k.

Reason (R): The discriminant of this equation is zero.

1. Assertion (A) is true, but Reason (R) is false.

2. Assertion (A) is false, but Reason (R) is true.

3. Both Assertion (A) and Reason (R) are correct, and Reason (R) is the correct reason for Assertion (A).

4. Both Assertion (A) and Reason (R) are correct, and Reason (R) is incorrect reason for Assertion (A).

Solve the following equations by factorisation:

x² + 6x - 16 = 0

Solve the following equations by factorisation:

2x² + ax - a² = 0