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- <?php
- if (isset ($_POST["submit"]))
- {
- $a = $_POST["a"];
- $b = $_POST["b"];
- $c = $_POST["c"];
- $D = ($b*$b) - (4*$a*$c);
- if ($D<0)
- {
- echo "Няма реални корени";
- }
- else if ($D==0)
- {
- $x1 = -$b / (2*$a);
- echo "x1=$x1";
- }
- else if ($D>0)
- {
- $x1 = (-$b - sqrt($D)) /(2*$a);
- $x2 = (-$b + sqrt($D)) /(2*$a);
- echo "x1 = $x1 x2= $x2";
- }
- }
- ?>
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