Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
- Index
- » Help Me !
- » Proof Help
Pages: 1
#1 2005-11-20 04:19:27
- Andybbbb
- Guest
Proof Help
Q- Prove that when three consecutive even numbers are squared and the results are added, that the sum always has at least 3 divisors.
Thank you for your help.
#2 2005-11-20 18:03:54
- MathsIsFun
- Administrator
- Registered: 2005-01-21
- Posts: 7,713
Re: Proof Help
We are not worthy ... we are not worthy ... (assembled masses bowing down)
But it seems like cheating to include 1 and z 
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
Offline
#3 2005-11-20 18:52:18
- mathsyperson
- Moderator
- Registered: 2005-06-22
- Posts: 4,900
Re: Proof Help
I did all that, but with p-2, p and p+2 for better cancellation.
I got it to 4(3p²+2) and then gave up because I forgot about the 1 and z bit, so I didn't post it.
Why did the vector cross the road?
It wanted to be normal.
Offline
Pages: 1
- Index
- » Help Me !
- » Proof Help