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19 votes
Prove that 3^17−3^15+3^13 is divisible by 73.

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User ARAVIND SWAMI
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2 Answers

13 votes
13 votes

Answer:

Well 3^17-3^15+3^13 equals 116,385,579

Now divide that by 73

So 116,385,579 ÷ 73

That equals 1,594,323

Hope this helps

User Zhorov
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27 votes
27 votes

Answer: 3^13*73

Explanation:

3^17-3^15+3^13 So you factor out 3^13

=3^13(3^4-3^2+1)

3^4-3^2+1=73

3^13*73

User Javier Larroulet
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2.4k points