Answer:1. 3x⁻³ • 5x⁻³ = 15x⁻⁶ = 15/x⁶2. 2a⁻³(-3a⁻²) = -6a⁻⁵ = -6/a⁵3. x²y⁰²⁻³ = x²/y³ (since y⁰ = 1)4. (2⁰y⁻³)⁴ = (1*y⁻³)⁴ = 1/y¹² (since 2⁰ = 1)Note: A negative exponent represents division by the base raised to the positive exponent. For example, x⁻³ = 1/x³.