Free quadratic equation solver online – Simple and easy to use



EX: 2x² + 3x -4 = 0 (a = 2 and b = 3 and c = -4)

What is A: (A cannot be 0)

What is B:

What is C:


A may not be zero

Choose another value for A

“;}

echo “

Step 1

For D use this:

“;
echo ““;
echo “

That is:

“;
echo “

$b squared minus 4 times $a times $c

“;

echo “

D is {$d}

“;
if($d > 0) {
echo “

D is positive. So X has two values.

“;
} elseif($d < 0) { echo "

D is negative. So you cannot find X

“;
} elseif($d == 0) {
echo “

When D is 0, X has one value

“;
}

if($d > 0) {
echo “

Step 2

Use this:

So:

X = {$bd} ± √{$d} / 2 times {$a}

X1 is {$x1} and X2 is {$x2}

Top (x) (-b/2a) is: {$topx}

Top (y) (-d/4a) is: {$topy}

“;
} elseif($d == 0) {
echo “

Step 2

Use this:

So:

X =

{$bd} ± √{$d} / 2 • {$a}

X is {$x1}

Top (x) (-b/2a) is: {$topx}

Top (y) (-d/4a) is: {$topy}

“;
} else {
//
}
}

?>

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I wanted to create a very simple and easy to use calculator for equations. Hope you like it. No user needed.

Discriminant solver / calculator.

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