load "problem-61.py"

# %load "problem-61.py"
from IPython.display import display, Latex
from sympy import *
init_printing(use_latex='mathjax')

s,t=symbols('s,t')

u = -(s+t)

A =  8*(s**4+t**4+u**4)*(1/s**2+1/t**2+1/(s*t))/u**2
B = 16*(3-t*u/s**2-u*s/t**2-s*t/u**2)

simplify(A-B)

Out[2]: 
0
