Thank you for posting your math problem here in brainly. <span>According to the rational root theorem, the potential root of f(x) = 9x8 9x6 – 12x 7 are </span><span>±1, ±2, ±4,</span> <span>±<span>13</span>, ±<span>23</span>, ±<span>43</span>, </span> <span>±<span>19</span>, ±<span>29</span>, ±<span>49. I hope my answer helps. </span></span>