X 4 2x 3 9x 2 6x 9 0 July 8, 2019 16 32 64 128 4/(x ^ 2 - 6x + 9) - 6/(x ^ 2 - 9) = 1/(x + 3) X(x ^ 2 + 6x + 9) = 4(x + 3)
