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Create Hosna #111

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42 changes: 42 additions & 0 deletions Hosna
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<!DOCTYPE html>
<html lang="fa" dir="rtl">
<head>
<meta charset="UTF-8">
<title>حل معادله درجه دوم - جشنواره خوارزمی</title>
<style>
body { font-family: Tahoma; text-align: center; background: #f0f8ff; padding: 50px; }
input, button { font-size: 18px; padding: 10px; margin: 10px; }
#result { font-size: 24px; color: blue; margin-top: 30px; }
</style>
</head>
<body>
<h1>حل معادله ax² + bx + c = ۰</h1>
<p>a: <input type="number" id="a" value="1"></p>
<p>b: <input type="number" id="b" value="5"></p>
<p>c: <input type="number" id="c" value="6"></p>
<button onclick="solve()">محاسبه ریشه‌ها</button>
<div id="result"></div>

<script>
function solve() {
let a = Number(document.getElementById('a').value);
let b = Number(document.getElementById('b').value);
let c = Number(document.getElementById('c').value);

let delta = b*b - 4*a*c;
let result = document.getElementById('result');

if (delta > 0) {
let x1 = (-b + Math.sqrt(delta)) / (2*a);
let x2 = (-b - Math.sqrt(delta)) / (2*a);
result.innerHTML = `ریشه‌ها: x₁ = ${x1.toFixed(2)} و x₂ = ${x2.toFixed(2)}`;
} else if (delta == 0) {
let x = -b / (2*a);
result.innerHTML = `ریشه تکراری: x = ${x.toFixed(2)}`;
} else {
result.innerHTML = "معادله ریشه حقیقی ندارد (Δ < ۰)";
}
}
</script>
</body>
</html>