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**Use Factor Tree in Math **

Factor tree has many functions in mathematics. Besides for find factor the number, factor tree can use for find gcd or lcm in math. And in this discussion **maticschool**want to discuss how to use the factor tree in math.

Before we use factor tree we must know about primes number. Why ? Because of primes is what will we use for factor tree. To use a factor tree we know of at least between 1-20.

prime numbers between 1-20 = 2, 3, 5, 7, 11, 13, 17, 19

Aftere we know prime numbers between 1-20. Maticschool will give an example with numbers 42.

So from factor tree above the factor of 42 is 2, 3, and 7

Note :

- In the left position like 2 and 7 is divisor

- Divisor must prime numbers

- In the right position like 21 and 3 is results number

- Factor tree finish if the result number is prime number like in the example is 3

- In the left position like 2 and 7 is divisor

- Divisor must prime numbers

- In the right position like 21 and 3 is results number

- Factor tree finish if the result number is prime number like in the example is 3

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