3-te Binomische Formel Funktion + Test

src/main/java/src/TasksFrame.java

@@ -995,6 +995,13 @@ public class TasksFrame extends JFrame {
         return x;
     }
 
+    public int bin3(int a, int b)
+    {
+        int x = 0;
+        x = a*a - b*b;
+        return x;
+    }
+
 
     private void setupBinF()
     {

src/test/java/src/TasksFrameTest.java

@@ -26,6 +26,16 @@ class TasksFrameTest {
         assertEquals(16,x2);
     }
 
+    @Test
+    void bin3()
+    {
+        TasksFrame tasksFrame = new TasksFrame();
+        int x = tasksFrame.bin3(5,4);
+        assertEquals(9, x);
+        int x2 = tasksFrame.bin3(7,3);
+        assertEquals(40,x2);
+    }
+
 
     @Test
     void setupPI() {