Explanation: 1- square root means that the number is raised to the power 1/2. Therefore: √mn = (mn)^1/2 2- When we have a bracket containing two numbers multiplied by each other, and the whole bracket is raised to a certain power, then each number within the bracket would be raised to this same power. This means that: (mn)^1/2 = m^1/2 * n^1/2