Slide 9-7: Factoring Special Cases - Comparing two trinomials to identify perfect square trinomials.
A slide from a math presentation titled "9-7: Factoring Special Cases," showing two trinomials, 4x² + 12x + 9 and 4x² + 20x + 9, with step-by-step analysis to determine if they are perfect square trinomials. The first is factored as (2x + 3)², while the second is not a perfect square trinomial.