Resolve (x² + 1) / (x + 1)(x² + 2x + 1) into partial fractions.
Q1. Resolve (x² + 1) / (x + 1)(x² + 2x + 1) into partial fractions.
Answer: 1 - 1 / (x + 1) + 1 / (x + 1)²
Explanation: Using partial fraction decomposition: (x² + 1) / (x + 1)³ = A / (x + 1) + B / (x + 1)² + C / (x + 1)³.