Which sum or difference is modeled by the algebra tiles? The figure shows the elimination of 5 red tiles and 5 blue tiles in which two tiles with x and one tile with minus x. A. (x2 − 2x + 3) − (-x2 − 4x − 2) = 2x − 1 B. (x2 − 2x − 3) + (x2 − 4x + 2) = 2x − 1 C. (x2 − 2x − 3) − (x2 + 4x + 2) = 2x − 1 D. (x2 − 2x − 3) + (-x2 + 4x + 2) = 2x – 1