Mathematics
John Marty's user avatar
John Marty's user avatar
John Marty's user avatar
John Marty
  • Member for 10 years, 7 months
  • Last seen more than 8 years ago
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All Questions Answers
Score Newest
question
47
Find all real numbers $x$ for which $\frac{8^x+27^x}{12^x+18^x}=\frac76$
May 7, 2013
question
21
Do there exist infinitely many pairs of primes $(p,q)$ such that $pq$ divides $2^{p-1}+2^{q-1}-2$?
May 7, 2013
answer
16
Can both $x^2 + y+2$ and $y^2+4x$ be squares?
May 7, 2013
answer
15
Is $83^{27} +1 $ a prime number?
Aug 2, 2013
question
14
Given $a>b>2$ both positive integers, which of $a^b$ and $b^a$ is larger?
Jun 4, 2013
question
13
Show that $4mn-m-n$ can never be a square
May 23, 2013
question
12
Functions satisfying $f\left( f(x)^2+f(y) \right)=xf(x)+y$
Apr 10, 2013
answer
12
Sum equal to the product
May 24, 2013
answer
11
Prove that $\frac{a_1^2}{a_1+a_2}+\frac{a_2^2}{a_2+a_3}+ \cdots \frac{a_n^2}{a_n+a_1} \geq \frac12$
Apr 28, 2013
question
9
Elementary Number Theory; prove existence
Apr 9, 2013
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