Fix issue #333

mathgenerator/funcs/algebra/expanding.py

@@ -24,20 +24,22 @@ def expandingFunc(range_x1=10, range_x2=10, range_a=10, range_b=10):
     p3 = intParser(b)
     p4 = intParser(x2)
 
+    
     if p1 == "+1":
         p1 = ""
-    if p1[0] == "+":
+    elif len(p1) > 0 and p1[0] == "+":
         p1 = p1[1:]
     if p3 == "+1":
         p3 = ""
-    if p3 == "+":
+    elif p3 == "+":
         p3 = p3[1:]
     problem = f"({p1}x{p2})({p3}x{p4})"
 
     if c1 == "+1":
         c1 = ""
-    if c1[0] == "+":
+    elif len(c1) > 0 and c1[0] == "+":
         c1 = c1[1:]  # Cuts off the plus for readability
+    
     if c2 == "+1":
         c2 = ""
     solution = f"{c1}*x^2{c2}*x{c3}"