X 3 7x 2 2x 40 July 8, 2019 16 32 64 128 X 3 7x 2 2x 40 0 X 3 7x 2 2x 40 x 5 Factorise x 3 7x 2 2x 40 Factor x 3 7x 2 2x 40 Is x 5 a factor of x 3 7x 2 2x 40