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Best Answer

Use a factor tree.

84

42,2

21,2,2

7,3,2,2

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Wiki User

10y ago
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Wiki User

12y ago

84 Divide by two.

42,2 Divide by two.

21,2,2 Divide by three.

7,3,2,2 Stop.

2 x 2 x 3 x 7 = 84

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Q: How do you find the prime factor of 84?
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