7x 2 x 4 10 July 8, 2019 16 32 64 128 X 4 7x 2 10 0 Factor x 4 7x 2 10 X 2 7x 10 =- 2x 4 X 4 7x 3 10x 2 7x 5z 2x 10x 4 when x 2 and z 9 4 3x 2 )- 3 x 4 )= 7x 10 2x 7 7 x 10