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78 6 x 13 (2x3) x 13 The numbers 2, 3, and 13 are prime numbers, so the factor tree is complete. An alternate version of a factor tree for 78 is: 78 2 x 39 2 x (3x13)
Instead of just giving you the answer, I will do steps. First: Let "x" be the number Therefore, 2x = 78. x = 78/2 x = 39 The number is 39
2 x 3 x 13 = 78 No exponents are needed.
2 x 3 x 13 is the answer. 78 is easily divisible by 2 so that makes 2 and 39. Then 39 becomes 3 and 13.
1 x 78 2 x 39 are two ways.