This document contains problems involving expanding and factorizing algebraic expressions: 1) Expand and simplify expressions like (2 - n)2, (r/p)2 + - r ≠ 0, m2 + (4k + m)(4k - m), and more. 2) Factorize expressions like 18x + 27, 4x2 - 8x, 9x4 - 18x3 - 27x2, and others.