X 4 x 3 x 2 x 1 factorise July 8, 2019 16 32 64 128 X 1 )( x 2 )( x 3 )( x 4 )- 15 factorise X 4 3x 3 3x 2 x 1 factorise Factorise x 4 2x 3 3x 2 2x 1 Factorise 4 x 2 x 3 x 2 x minus 1 into x 1 54 Factorise x 1 )( x 2 )( x 3 )( x 4 )+ 6 Factorise x 1 into x 2 x 3 x 4 15
