X 2 7x 21 July 8, 2019 16 32 64 128 X 2 7x 21 0 X 2 7x 21 factored X 2 7x 21 factorise X 2 7x 21 9 X 2 7x 3x 21 X 3 7x 2 21x 27 X 3 7x 2 21x 27 0 2 x 12 )= 210 7x X 3 2 7x 21 X 3 3x 2 7x 21 G x )= 7x 2 21 X 3 7x 2 21x 27 factorise X 3 3x 2 7x 21 0 G x )= 7x 2 21 find the zeros Dfrac x 2 3x 18 7x 21
