We analyze modulo small values. First, note that $x^2 \geq 144$, so $|x| \geq 12$. Try small integer values of $y$ and check if $25x^2 = 144y^2 + 3600$ yields a perfect square for $x^2$. - AMAZONAWS

📅 March 11, 2026 👤 scraface

Mar 11, 2026

$We analyze modulo small values. First, note that $x^2 \geq 144$, so $|x| \geq 12$. Try small integer values of $y$ and check if $25x^2 = 144y^2 + 3600$ yields a perfect square for $x^2$.$

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