2 2 7x 5 1 4 July 8, 2019 16 32 64 128 X 4 (- 2 7x )=- 2 5 9x )+ 1 4x 2 - 2x 1 )-( 5x 2 - 7x 5 Show that 1 6x 2 7x 5 1 4x 2 1 X 2 3x 1 )+( 4x 2 7x 5 2x 7