19. Quadratic equation

function solveQuadraticEquation(a, b, c) {
    let d = getDiscriminant(a, b, c);

    if (b === 0 && c === 0) {
        console.log(0);
        return;
    }

    if (d < 0) {
        console.log("No");
        return;
    }

    let roots = getRoots(a, b, d);

    for (let root of roots.filter((v, i, f) => f.indexOf(v) === i).sort()) {
        console.log(root);
    }

    function getRoots(aa, bb, dd) {
        let result = [];

        result.push((-bb - Math.sqrt(dd)) / (2 * aa));
        result.push((-bb + Math.sqrt(dd)) / (2 * aa));

        return result;
    }

    function getDiscriminant(a, b, c) {
        return (b ** 2 - 4 * a * c);
    }
}

//solveQuadraticEquation(6, 11, - 35);
//solveQuadraticEquation(1, - 12, 36);
//solveQuadraticEquation(5, 2, 1);
solveQuadraticEquation(-4, 3, 4);