Question

Express 756 as a product of prime factors.

Solution

1. 756 = 2 x 378 = 2 x 2 x 189.
2. 189 = 3 x 63 = 3 x 3 x 21 = 3 x 3 x 3 x 7.
3. Therefore, 756 = 2^2 x 3^3 x 7.