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Squares, roots and prime factors
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Squares, roots and prime factors
Squares, roots and prime factors
Example 1
Calculate 62.
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Answer: 36
- 62 means 6×6, so it equals 36.
Example 2
Find the positive square root of 64.
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Answer: 8
- A square root multiplied by itself gives 64. Since 8×8=64, the positive root is 8.
Example 3
Which is the prime factorisation of 12?
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Answer: 22×31
- Divide 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.
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