Language, notation and formulas

# 2.2.1 Try some yourself

## Activity 2

Here is a poor example of mathematical writing, although the final answer is correct. Rewrite it, correcting the layout and the mathematical punctuation.

## Answer

There are many possible alternatives – here is one of them.

Since 52 = 25, 42 = 16 and 32 = 9,

hence

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