Update app.py

app.py

@@ -34,7 +34,13 @@ if selected_function == "因数分解":
     if expression:
         x = symbols('x')
         factored_expression = factor(expression)
-        st.success(f"因数分解結果: {factored_expression.subs(user_defined_symbols)}")
+
+        # シンボルの代入
+        for symbol in user_defined_symbols:
+            factored_expression = factored_expression.subs(symbol, user_defined_symbols[symbol])
+
+        st.success(f"因数分解結果: {factored_expression}")
+
 
 
 # 展開(Sympy)