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To factorize the given polynomials, we need to find the factors that multiply to give the original expressions. Let's start by examining each polynomial one by one:

### (i) \(x^3 - 2x^2 - x + 2\)

1. **Grouping and Factoring**:
   \[
   x^3 - 2x^2 - x + 2

Factorise: (i) x^3 - 2x^2 - x + 2 (ii) x^3 - 3x^2 - 9x - 5 (iii) x^3 + 13x^2 + 32x + 20 (iv) 2y^3 + y^2 - 2y - 1

Learn how to factorize polynomials such as x^3 - 2x^2 - x + 2 and x^3 + 13x^2 + 32x + 20 using grouping, factor theorem, and synthetic division. This guide walks through the factorization process step-by-step, ideal for students in Grades 9-11.

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