# How do you write the prime factorization of 28?

If you ever have any doubts you can always do a quick rough sketch of a factor tree. Mine is too neat for exam conditions.

Starting point: 28 is even so 2 will divide into it exactly.

It is helpful if you can commit some of the prime numbers to memory. A quick search on the internet will provide a list for you. I suggest you use 'images'

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The prime factorization of 28 is

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The prime factorization of 28 is: 2 × 2 × 7

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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