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