# POLQ 2 | Lesson 1 | Explore (Equivalent Expressions)

Consider the algebraic expressions below:

Problem Comes from Illustrative Mathematics – see link below

$$(n+2)^2 – 4$$ and $$n^2+4n$$

1. Use the figures below to illustrate why the expressions are equivalent:

2. Find some ways to algebraically verify the same result.

Check solutions here.