9 3x 1 2 4 x 1 2 July 8, 2019 16 32 64 128 1 2 (- 4 6x )= 1 3x 2 3 x 9 Factorise 9 3x 1 2 4 x 1 2 1 2 − 4 ( x − 3 ) = 3 9 − 9 x 3 x 3 = 9 4 1/2 + 1 1/3 4 9 - x / 1 2 = 3
