1 6x 9x 2 July 8, 2019 16 32 64 128 1 6x 9x 2 factorise 1 6x 9x 2 0 1 6x 2 9x 4 1 6x 1 3 1 9x 2 9x 2 6x 1 factored 9x 2 6x 1 0 discriminant 9x 2 6x 1 factor 9x 2 6x 1 0 factor 9x 2 )+ 6x 1 25y 1 6x 9x 2 4y 2 Dx 1 6x 9x 2