$\"\"$

The given roots are $\"\"$ .

Apply quadratic formula: $\"\"$ .

$\"\"$ (Replace p with $\"\"$ and q with $\"\"$ ) \ \

$\"\"$

$\"\"$ $\"\"$

$\"\"$

$\"\"$ (Multiply each side by 15) \ \

$\"\"$ (Simplify) \ \ $\"\"$

The quadratic equation is $\"\"$ and

the standard form of the equation is $\"\"$ .