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It's not necessary for two reasons. First, 29 is a factor of 87 so it will automatically be the GCF of this problem. Second, since factor trees are designed to find prime numbers and 29 is already prime, it doesn't have a tree. But if you insist...

87

3,29

Here we have a factor tree, more like a factor shrub, that shows that the prime factors of 87 are 3 and 29. Since 29 is a factor of 29, the GCF is 29.

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โˆ™ 2013-02-19 16:02:53
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Q: How do you use a factor tree to find the greatest common factor of 87 and 29?
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Related questions

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Find out about factors and factor trees.


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You need at least two factor trees to find a GCF.


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You must start with two numbers in order to find the greatest common factor of a set of numbers. The number 25 alone has no greatest common factor as their is no other number in order to have a factor in common with anything.


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A factor tree will show you the prime factorization of 88. Comparing that prime factorization of 88 and another number will you show you the GCF between the two. You need at least two numbers to find a GCF.


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29 is already prime. No tree. 87 3,29 Since there are no common prime factors, the GCF is 1.


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