Update app.py

app.py

@@ -32,13 +32,9 @@ selected_function = st.sidebar.selectbox("機能を選択", ["因数分解", "
 if selected_function == "因数分解":
     expression = st.text_input("因数分解する式を入力してください:")
     if expression:
+        x = symbols('x')
         factored_expression = factor(expression)
-
-        # 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}")
+        st.success(f"因数分解結果: {factored_expression.subs(user_defined_symbols)}")
 
 
 # 展開(Sympy)