# Q.4 Express each of the following as a product of prime factors only in exponential form: (i) 108 × 192 (ii) 270 (iii) 729 × 64 (iv) 768

(i) 108 × 192 = 2 × 2 × 3 × 3 × 3 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3
=$$2^8 × 3^4$$
(ii) $$270 = 2×3×3×3×5 = 2×3^3×5$$
(iii) 729 × 64 = 3 × 3 × 3 × 3 × 3 × 3 × 2 × 2 × 2 × 2 × 2 × 2
$$=3^6 × 2^6$$
(iv) 768 = 2×2×2×2×2×2×2×2×3 = $$2^8 ×3$$