Factor completely 10x5 + 4x4 + 8x3.

Prime
2(5x5 + 2x4 + 4x3)
2x3(5x2 + 2x + 4)
2x(5x4 + 2x3 + 4x2)

The factored form of 10x5 + 4x4 + 8x3 is 2x(5x4 + 2x3 + 4x2).