practica3problema4

namespace practica3problema4.visual
{
public partial class Form1 : Form
{
double x, y;
public Form1()
{

InitializeComponent();
x = y = 0.0;
}

private void Form1_Load(object sender, EventArgs e)
{

}

private void button1_Click(object sender, EventArgs e)
{
x = double.Parse(textBox1.Text);
y = 3 * (x * x) + (9 * x) - 20;
label3.Text = "y=" + y;
}

private void button2_Click(object sender, EventArgs e)
{
textBox1.Clear();
textBox1.Focus();
label3.Text = "";
}

private void button3_Click(object sender, EventArgs e)
{
Close();
}
}
}


















namespace practica3problema4.consola
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Encuentra el valor de y a partir de la ecuacion y=3x^2 + 9x -20");
Console.WriteLine("Introdusca un valor a x:");
int x = int.Parse(Console.ReadLine());
int y= 3*(x*x)+(9*x)-20;
Console.WriteLine("Ecuacion" + " es: " + y);
Console.ReadKey();
}
}
}