#Add #Add
def add(x,y):
    return x+y; #add #text for bug1
	#subtract #subtract
def subtract(x,y):
    return x-y   #subtract
	#multiply
def multiply(x,y):
    return x*y  #multiply

def divide(x,y):
    return (x/y)
#square
def square(x)
	return x*x

