What are the prime factors of 625? A. 1, 5, 5, 5, 5 B. 5, 5, 25 C. 25, 25 D. 5, 5, 5, 5

QUESTION POSTED AT 01/06/2020 - 03:04 PM

Answered by admin AT 01/06/2020 - 03:04 PM

Prime numbers are numbers that have no factors other than 1 and itself.
I know the square root of 625 is 25, so we have 25 • 25.
However, 25 isn't prime. The factors of 25 are 5&5.
We now have 5 • 5 • 5 • 5, or 5^4.

Your answer is D.)

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