SEIANGPRTTYIN SEIANGPRTTYIN Math Answered 1. Which mathematical expression is a perfect square trinomial? A. 6x2 β 5xy + y2B. 6x2 +13x β 28C. 16x2 β40x + 25D. 4x2 + 20x + 252. Which of the following DOES NOT belong to the group?A. 1 4 x4 β 1B. x2 β 0.0001y4C. 6x2 +13x β 28D. 4x2 + 20x + 25β