Given a polynomial f(x) = 2x³ - 7x² - 5x + 4

Assertion (A): (x - 1) is not factor of f(x).

Reason (R): f(1) = -6.

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).

When 2x³ - 9x² + 10x - p is divided by (x + 1), the remainder is -24. Find the value of p.

If (2x - 3) is a factor of 6x² + x + a, find the value of a. With this value of a, factorise the given expression.