Question

1-xy-20x^2y^2

Answer 1

What are we doing with it?

Answer 2

admiring it... such a pretty equation ;D
@Psymon

Answer 3

@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.

Answer 4

that makes far more sense than my answer ;D
nice one @Directrix