(u−2)(8u+1)(3u−8) = (8u²+u-16u-2)(3u-8) = (8u²-15u-2)(3u-8) = 24u³-64u²-45u²+120u-6u+16 = 24u³-109u²+114u+16
(u−2)(8u+1)(3u−8) = (8u²+u-16u-2)(3u-8) = (8u²-15u-2)(3u-8) = 24u³-64u²-45u²+120u-6u+16 = 24u³-109u²+114u+16