4x 2y 6xy 2 July 8, 2019 16 32 64 128 Factorise 4x 2y 6xy 2 3xy )( 4x 2y )/- 6xy 2 Y 4x 6 x 21 − 2y 2y 3 4x 2 y x 6 1 4x 2y 1 6xy 2 6xy - 4y + 6 - 9x