) = "+polynomial_xs[0].toFixed(1)+"<sup>2</sup>a + "+polynomial_xs[0].toFixed(1)+" b + c = "+polynomial_ys[0].toFixed(1);
    polynomial_system.innerHTML += "<br>";
    polynomial_system.innerHTML += "P(x<sub>2</sub>) = "+polynomial_xs[1].toFixed(1)+"<sup>2</sup>a + "+polynomial_xs[1].toFixed(1)+" b + c = "+polynomial_ys[1].toFixed(1);
    polynomial_system.innerHTML += "<br>";
    polynomial_system.innerHTML += "P(x<sub>3</sub>) = "+polynomial_xs[2].toFixed(1)+"<sup>2</sup>a + "+polynomial_xs[2].toFixed(1)