# POLQ 2 | Lesson 1 | Reflect

Below are the answers to the above. Think about and write a reflection of how you identified which expression aligned with each pattern. Explain why the expressions in the “none” column didn’t all in a category.

Perfect Square Trinomial: $$x^2 + 10x +25$$, $$r^2 -8r +16$$, $$(4x)^2 – 48x + 6^2$$

Difference of 2 Squares: $$121 -y^2$$

Sum of Cubes: $$x^3 +125$$, $$m^3 +8$$

Difference of Cubes:  $$8x^3-27$$, $$a^3 -125b^3$$

Other:  $$2x^3 + 128y^3$$,  $$(x-2)^2 -49$$