$\"\"$

Let $\"\"$ and $\"\"$ are two solutions of the quadratic equation, then the quadratic equation can be written as

$\"\"$ . $\"\"$

The solutions of the quadratic equation are $\"\"$ and $\"\"$ .

The quadratic equation is $\"\"$ . \ \

$\"\"$

Apply foil method : $\"\"$ .

$\"\"$

$\"\"$ . $\"\"$

The quadratic equation is $\"\"$ .