The value
in terms of a, b and c is 
<h3 />
Roots of a quadratic equation
Given the quadratic equation ax² + bx + c, the sum and product of the roots are expressed as:
Get the value of the radical expression 
Taking the square of the expression will give:
Take the square root of both sides:

Substitute the product and the sum values into the expression to have:

Hence the value
in terms of a, b and c is 
Learn more on the roots of equation here: brainly.com/question/25841119