(3x - 7) ^ 2 = (7x - 3) ^ 2 July 8, 2019 16 32 64 128 3x 7 2 =( 7x 3 2 7 3x 2 )- 3 7x 2 2x 21x 2 3x 7 7x 3 37 ((3x + 7) ^ 2 - (3x - 7) ^ 2)/x
