TypeError: unsupported operand type(s) for ** or pow(): ‘function’ and ‘int’

I don’t know why i can x*2 and y*2 please help i need this i dont get why im getting this error… . . . . .. . . .. .. . . . . . def regresion(lista,n): a=0 b=0 if isinstance(n,int): a =((x**2)(y**2)-n(promx)(promy)) / (((x**2)**2)-n(promx**2)) b =(promy-(n)(promx**2)) else: "n no es entero" return a,b [...]

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