3x 2 7x 3 1 4 July 8, 2019 16 32 64 128 (- 4x 3 )-( 7x 3x 2 1 7 2x 3 7x 1 3x 2 4 3x 5 2 4x 5 3 7x 1 6 5 3x 2 4x 4 7x 3 1 5x in standard form 7x 2 3x 1 4x 3 x 19 3x 3 7x 1 )+( 4x 3 9x 2 11x 1 3x 1 7 2 4x 3 7x 6 (3x - 7) ^ 2 = (7x - 3) ^ 2