why is this code not working? :(

Question

hello there, if anyone knows python well, then plase help me with this question:
i was tring to make a calculator which gives square of a number, addition of two numbers or subtraction of two numbers.
but when i tried to output the square of a number, it throwed away an error. please tell why.
It was answered correctly by "E ~ J"
but now the confusion is how is the code working now :/

https://code.sololearn.com/ctbo2QZjfZsb/?ref=app
https://code.sololearn.com/cl7WavjxuCLs/?ref=app
https://code.sololearn.com/ciF7tKLgkZVM/?ref=app
https://code.sololearn.com/ccqwRaYw7gLj/?ref=app

Answer 1

It's your parenthesis on the second line. All open parenthesis require closing parenthesis. And try not to use them if you don't need it

Answer 2

thnx E J, that really helped!