Answer:
a) 2y³/9x²
b) 9/4x²
Explanation:
a) 6xy³ /(3x)³
= 6xy³ / 27x³
= 2y³ / 9x³⁻¹
= 2y³ / 9x²
b) (8x³ / 27)⁻²/³
= 1 / (8x³ / 27)²/³
= 1 / (2³ * x³ / 3³)²/³
= 1 / (2³ˣ²/³ * x³ˣ²/³ / 3³ˣ²/³)
= 1 / (2² * x² / 3²)
= 1 / (4x² / 9)
= 1 * 9 / 4x²
= 9 / 4x²