#### Understanding

Students understand how to recognize the structure in equivalent quadratic expressions.

### What to look for

Students make connections between the area models and algebraic expressions they represent.

### Sample Assessment

Which of the following expressions are equivalent to \((x + 4)^2\)?

- \(x^2 + 16\)
- \(x^2 + 4x + 16\)
- \((x + 2)^2 + 4(x + 3)\)
- \((x + 5)^2 - 4(x + 1)^2\)

Answer: c. \((x + 2)^2 + 4(x + 3)\)