Update app.py

app.py

@@ -249,7 +249,7 @@ elif selected_function == "問題生成":
                 problem = f"一辺の長さが{side_length}の正三角形の面積"
                 generated_problems.append(problem)
                 st.success(f"問題: {problem}")
-                ReProblem =f"sqrt({s} * ({s} - {side_length}) * ({s} - {side_length}) * ({s} - {side_length}))"
+                ReProblem =f"sqrt{{s} * ({s} - {side_length}) * ({s} - {side_length}) * ({s} - {side_length})}"
                 #ReProblem =equation# =# "sqrt({s}*({s}-{side_length})*({s}-{side_length})*({s}-{side_length}))"
                 
             #equation = equation.replace("{sidelength}", str(side_length))