Using the formula (a + b) (a-b) = A2-B2 to calculate (x + 2y-1) (x-2y + 1), the following deformation is correct () A. [x-(2y+1)]2B. [x+(2y+1)]2C. [x-(2y-1)][x+(2y-1)]D. [(x-2y)+1][(x-2y)-1]

Using the formula (a + b) (a-b) = A2-B2 to calculate (x + 2y-1) (x-2y + 1), the following deformation is correct () A. [x-(2y+1)]2B. [x+(2y+1)]2C. [x-(2y-1)][x+(2y-1)]D. [(x-2y)+1][(x-2y)-1]

(x + 2y-1) (x-2y + 1) = [x - (2y-1)] [x + (2y-1)]