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A factor tree shows all the smallest factors of a number.
You know it is complete when all numbers left are prime (can’t be factored any further).
For example, a factor tree of 20 would be 2*2*5

Answer:

A factor tree is a diagram used to determine the prime factors of a natural number greater than one. You will know when completed when you have a prime number/prime numbers only

Step-by-step explanation: