1 − x⁹ = (1 − x)(1 + x + x²) ……………

1. 1 − x³ + x⁶

2. 1 + x³ + x⁶

3. 1 − x³ − x⁶

4. 1 + x³ − x⁶

Factorization of p² − 2p − (q + 1)(q − 1) is:

1. (p + q − 1)(p − q + 1)

2. (p − q + 1)(p − q − 1)

3. (p + q − 1)(p − q − 1)

4. (p + q + 1)(p − q)

Assertion(A): One of the factors of (5x + 1)² + (25x² - 1) is 2x.

Reason(R): (a + b)² = (a + b)(a + b) and a² - b² = (a + b)(a - b)

1. A is true, R is false

2. A is false, R is true

3. Both A and R are true

4. Both A and R are false