Practise the method.Example 1Calculate 62.Show worked answerAnswer: 3662 means 6×6, so it equals 36.Example 2Find the positive square root of 64.Show worked answerAnswer: 8A square root multiplied by itself gives 64. Since 8×8=64, the positive root is 8.Example 3Which is the prime factorisation of 12?Show worked answerAnswer: 22×31Divide repeatedly by primes 2 and 3. There are 2 factors of 2 and 1 factors of 3. Composite factors are not a completed prime factorisation.