To apply the Distributive Property to multiply the polynomial \(3x^2(2x^4 - 15x)\), we'll distribute \(3x^2\) to each term inside the parentheses.
- Multiply \(3x^2\) by \(2x^4\):
\[ 3x^2 \cdot 2x^4 = 6x^{2+4} = 6x^6 \]
- Multiply \(3x^2\) by \(-15x\):
\[ 3x^2 \cdot (-15x) = -45x^{2+1} = -45x^3 \]
Now, combine these results:
\[ 3x^2(2x^4 - 15x) = 6x^6 - 45x^3 \]
So the final answer is:
\[ \boxed{6x^6 - 45x^3} \]