X 5 2x 4 10x 3 20x 2 9x 18 July 8, 2019 16 32 64 128 2) (x - 5)(x - 4) = 20 4) (1 - x)(9 - x) = - 10x 5/(x ^ 2 + 10x) + (x + 20)/(x ^ 2 - 10x) = 10/(x ^ 2 - 100)
