Código
Public Class Form1 'Programa para sacar las raices en una funcion cuadratica 'por ahora solo raiz positiva Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim x As Double Dim d As Double Dim a As Integer Dim b As Integer Dim c As Integer d = Math.Sqrt(x) x = ((b * b) - (4 * a * c)) a = Val(TextBox1.Text) b = Val(TextBox2.Text) c = Val(TextBox3.Text) TextBox4.Text = (((-1 * b) + d) / (2 * a)) End Sub End Class