Difference between revisions of "2017 UNM-PNM Statewide High School Mathematics Contest II Problems/Problem 4"

(Created page with " == Problem == Find all real triples <math>(x,y,z)</math> which are solutions to the system: <math>x^3 + x^2y + x^2z = 40</math> <math>y^3 + y^2x + y^2z = 90</math> <math...")
 
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== Problem ==
 
== Problem ==
  
Find all real triples <math>(x,y,z)</math> which are solutions to the system:
+
Find a second-degree polynomial with integer coefficients, <math>p(x) = ax^2 + bx + c</math>, such that <math>p(1),p(3),p(5)</math>, and <math>p(7)</math> are perfect squares, but <math>p(2)</math> is not.
 
 
<math>x^3 + x^2y + x^2z = 40</math>
 
 
 
<math>y^3 + y^2x + y^2z = 90</math>
 
 
 
<math>z^3 + z^2x + z^2y = 250</math>
 
  
 
== Solution==
 
== Solution==

Revision as of 03:43, 19 January 2019


Problem

Find a second-degree polynomial with integer coefficients, $p(x) = ax^2 + bx + c$, such that $p(1),p(3),p(5)$, and $p(7)$ are perfect squares, but $p(2)$ is not.

Solution

See also

2017 UNM-PNM Contest II (ProblemsAnswer KeyResources)
Preceded by
Problem 3
Followed by
Problem 5
1 2 3 4 5 6 7 8 9 10
All UNM-PNM Problems and Solutions