perplexus.info :: Just Math : No integer solutions

Home > Just Math

No integer solutions (Posted on 2012-12-10)

Prove that the equation 15x²-7y²=9 has no integer solutions.

No Solution Yet Submitted by Ady TZIDON

Rating: 3.0000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

slower this time

Comment 4 of 4 |

(In reply to A slightly faster not so fast by Steve Herman)

Yep, I didn't demonstrate that the equation implied both x and y were divisible by 3. Thanks for fleshing that out.

Posted by xdog on 2012-12-10 20:15:42

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (0)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info