4x 5 8x 4 5x 3 10x 2 x 2 July 8, 2019 16 32 64 128 3) (5 - 2x)(4x ^ 2 + 10x + 25) = 2 5x - 8x ^ 3 4) (6 - 5x)(36 + 30x + 25x ^ 2) = 108x - 125x ^ 3