Traceback (most recent call last): File "main.py", line 3, in <module> y = eval((x**3+2*x)/(x**4+3(x**2)+1)) TypeError: 'int' object is not callable

Traceback (most recent call last):
  File "main.py", line 3, in <module>
    y = eval((x**3+2*x)/(x**4+3(x**2)+1))
TypeError: 'int' object is not callable