Difference between revisions of "1985 USAMO Problems/Problem 1"

m (See Also)
(Problem)
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Determine whether or not there are any positive integral solutions of the simultaneous equations  
 
Determine whether or not there are any positive integral solutions of the simultaneous equations  
<cmath>x_1^2+x_2^2+\cdots+x_{1985}^2=y^3,
+
<cmath>
\hspace{20pt}
+
\begin{align*}
x_1^3+x_2^3+\cdots+x_{1985}^3=z^2</cmath>
+
x_1^2 +x_2^2 +\cdots +x_{1985}^2 & = y^3,\\
 +
x_1^3 +x_2^3 +\cdots +x_{1985}^3 & = z^2
 +
\end{align*}
 +
</cmath>
 
with distinct integers <math>x_1,x_2,\cdots,x_{1985}</math>.
 
with distinct integers <math>x_1,x_2,\cdots,x_{1985}</math>.
  

Revision as of 22:12, 8 August 2021

Problem

Determine whether or not there are any positive integral solutions of the simultaneous equations \begin{align*} x_1^2 +x_2^2 +\cdots +x_{1985}^2 & = y^3,\\ x_1^3 +x_2^3 +\cdots +x_{1985}^3 & = z^2 \end{align*} with distinct integers $x_1,x_2,\cdots,x_{1985}$.

Solution

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See Also

1985 USAMO (ProblemsResources)
Preceded by
First
Problem
Followed by
Problem 2
1 2 3 4 5
All USAMO Problems and Solutions

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