Here's the question you clicked on:
mathfun69
1-xy-20x^2y^2
What are we doing with it?
admiring it... such a pretty equation ;D @Psymon
@mathisfun If it is factoring you want: 1 - xy - 20x²y² = ( 1 + ? xy) * (1 - ? xy) Hint: To get the values of ?, look for two numbers that multiply to -20 AND add to -1.
that makes far more sense than my answer ;D nice one @Directrix