'''

This file contains the functions that you need for completing this assignment. 

1. expression_1() --> 30%
2. expression_2() --> 40%
3. expression_3() --> 30% 

Failure to follow the variable name guides will lead to reduction of 10 points. 

DO NOT EDIT THE FUNCTION NAMES.


'''

def expression_1(x):
    result = x**3 - (2*x + x**2) - 100
    return result

def expression_2(x, y):
    answer = ((x**4)/(2*y))-(3*x*y)+((6*y)/(7*x)
    final_answer = int(answer)
    return final_answer


def expression_3(x, y):
    formula = (x**3 + y**2)/(x**2 - y**3)
    return formula

if __name__ == "__main__":
    
    pass
