Please help and show work!

Step 1. Use Multiplication Distributive Property
-3 * 2^4x^4(4x^5y)^2
Step 2. Simplify 2^4 to 16
-3 * 16x^4(4x^5y)^2
Step 3. Use Multiplication Distributive Property
-3 * 16x^4 * 4^2(x^5)^2y^2
Step 4. Simplify 4^2 to 16
-3 * 16x^4 * 16(x^5)^2y^2
Step 5. Use the Power Rule
-3 * 16x^4 * 16x^10y^2
Step 6. Take out the constants
-(3 * 16 * 16)x^4x^10y^2
Step 7. Simplify 3 *16 * 16 to 768
-768x^4x^10y^2
Step 8. Use the Product Rule
-768x^4 + 10y^2
Step 9. Simplify 4 + 10 to 14
-768x^14y^2
-3(2x)⁴(4x⁵y)² = When a power is raised to a power the exponents have to be multiplied.
-3(2⁴x⁴)(4²x⁽⁵*²⁾y²) = We can take out the constants.
=-3*16*16(x⁴)(x¹⁰y²) = We can group the same variables.
=-768(x⁴x¹⁰)(y²) = When multiplying two powers that have the same base, you have to add the exponents.
=-768x⁽⁴⁺¹⁰⁾y² = -768x¹⁴y²
Answer : -768x¹⁴y²
Hope this helps!
[tex]\textit{\textbf{Spymore}}[/tex]