X 2 9 x 2 8x 15 July 8, 2019 16 32 64 128 X 2 9 2 x 2 8x 15 2 0 X 2 6x 9 x 2 8x 15 Rút gọn x 2 6x 9 x 2 8x 15 X 3 5x x 2 − 9 x 2 − 8x 15 Which expression is a factor of both x 2 9 and x 2 8x 15 Simplify fully x 2 8x 15 x 2 9 Rút gọn phân thức x 2 6x 9 x 2 8x 15 9 x 8 =