(i) a⁵/a⁸ = a⁵⁻⁸ = a⁻³ = 1/a³(ii) (123)² = 123 × 2 = 246(iii) b⁴ × (53)⁴ = (b × 53)⁴ = (53b)⁴(iv) (3ˣ/3ʸ) × 3⁹ = 3ˣ⁻ʸ × 3⁹ = 3ˣ⁻ʸ⁺⁹(v) 2⁷ × (x)(⁷) = 2⁷x⁷ = (2x)⁷