diff --git a/src/main/java/src/TasksFrame.java b/src/main/java/src/TasksFrame.java
index 289750b..aaa9795 100644
--- a/src/main/java/src/TasksFrame.java
+++ b/src/main/java/src/TasksFrame.java
@@ -8,6 +8,8 @@ import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.util.ArrayList;
 import java.util.LinkedList;
+import java.lang.Character;
+
 
 public class TasksFrame extends JFrame {
 
@@ -191,8 +193,6 @@ public class TasksFrame extends JFrame {
         return Math.round(result * 100.0) / 100.0;
     }
 
-
-
     private void setupDurchschnitt() {
 
         JPanel jPanel = setupPanel("Durchschnitt");
@@ -247,8 +247,6 @@ public class TasksFrame extends JFrame {
 
     }
 
-
-
     private void setupExponent() {
 
         JPanel jPanel = setupPanel("Potenzrechner");
@@ -391,6 +389,7 @@ public class TasksFrame extends JFrame {
         return steuer;
     }
 
+
     private void setupSteuer()
     {
         JPanel jPanel = setupPanel("Steuer Berechner von Kaufprodukten");
@@ -980,6 +979,13 @@ public class TasksFrame extends JFrame {
         jPanel.add(k);
     }
 
+    public int bin1(int a, int b)
+    {
+        int x = 0;
+        x = a*a + 2*a*b + b*b;
+        return x;
+    }
+
 
     public void setupArea()
     {
diff --git a/src/test/java/src/TasksFrameTest.java b/src/test/java/src/TasksFrameTest.java
index dee0bbb..6b73c72 100644
--- a/src/test/java/src/TasksFrameTest.java
+++ b/src/test/java/src/TasksFrameTest.java
@@ -2,10 +2,21 @@ package src;
 
 import org.junit.jupiter.api.Test;
 
+
 import static org.junit.jupiter.api.Assertions.*;
 
 class TasksFrameTest {
 
+    @Test
+    void bin1() {
+        TasksFrame tasksFrame = new TasksFrame();
+        int x = tasksFrame.bin1(5, 4);
+        assertEquals(81, x);
+        int x2 = tasksFrame.bin1(7,3);
+        assertEquals(100,x2);
+    }
+
+
     @Test
     void setupPI() {
         TasksFrame tasksFrame = new TasksFrame();
@@ -37,7 +48,7 @@ class TasksFrameTest {
         assertEquals(273.15,x3,0.01);
 
     }
-
+   
     @Test
     void setupSteuer19(){
         TasksFrame tasksFrame = new TasksFrame();