X 2 5x 19 July 8, 2019 16 32 64 128 X 2 5x 19 0 X 2 6x 19 5x 9 2 x 11 5x 19 3 5 x 2 19 5x 4 3 5 x 2 19 5x 4 factorise 15 2 x 8 )= 5x 19 2 4 x )=- 5x 19 X 2 7x 19 28 5x 4x 4 5x (- x 2 19
