Javascript Program to Solve Quadratic Equation

// program to solve quadratic equation
let root1, root2;

// take input from the user
let a = prompt("Enter the first number: ");
let b = prompt("Enter the second number: ");
let c = prompt("Enter the third number: ");

// calculate discriminant
let discriminant = b * b - 4 * a * c;

// condition for real and different roots
if (discriminant > 0) {
root1 = (-b + Math.sqrt(discriminant)) / (2 * a);
root2 = (-b - Math.sqrt(discriminant)) / (2 * a);

// result
console.log("The roots of quadratic equation are ${root1} and ${root2}");

}

// condition for real and equal roots
else if (discriminant == 0) {
root1 = root2 = -b / (2 * a);

// result
console.log("The roots of quadratic equation are ${root1} and ${root2}");

}

// if roots are not real
else {
let realPart = (-b / (2 * a)).toFixed(2);
let imagPart = (Math.sqrt(-discriminant) / (2 * a)).toFixed(2);

// result
console.log(
"The roots of quadratic equation are ${realPart} + ${imagPart}i and ${realPart} - ${imagPart}i"

);
}